diff --git a/type/__bird_bgp/files/template.sh b/type/__bird_bgp/files/template.sh
new file mode 100755
index 0000000..4d8f297
--- /dev/null
+++ b/type/__bird_bgp/files/template.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+# Template to generate a bgp protocol configuration file for bird(1).
+# Required non-empty variables:
+# __object_id, local_{ip,as}, neighbor_{ip,as}
+#
+# Required defined variables:
+# description, password, ipv{4,6}_{import,export}
+
+# Header
+echo "protocol bgp ${__object_id:?} {"
+
+# Optional description
+[ -n "${description?}" ] && printf "\tdescription \"%s\";\n" "${description?}"
+
+# Mandatory session information
+cat << EOF
+	local ${local_ip?} as ${local_as:?};
+	neighbor ${neighbor_ip:?} as ${neighbor_as:?};
+EOF
+
+# Direct connection ?
+[ -n "${direct?}" ] && printf "\tdirect;\n"
+
+# Password-protected session ?
+[ -n "${password?}" ] && printf "\tpassword \"%s\";\n" "${password?}"
+
+if [ -n "${ipv4_import?}" ] || [ -n "${ipv4_export?}" ] || "${ipv4_extended_next_hop?}";
+then
+	printf "\tipv4 {\n"
+	[ -n "${ipv4_import?}" ] && printf "\t\timport %s;\n" "${ipv4_import:?}"
+	[ -n "${ipv4_export?}" ] && printf "\t\texport %s;\n" "${ipv4_export:?}"
+	[ -n "${ipv4_extended_next_hop?}" ] && printf "\t\textended next hop;\n"
+	printf "\t};\n"
+fi
+if [ -n "${ipv6_import?}" ] || [ -n "${ipv6_export?}" ] || "${ipv6_extended_next_hop?}";
+then
+	printf "\tipv6 {\n"
+	[ -n "${ipv6_import?}" ] && printf "\t\timport %s;\n" "${ipv6_import:?}"
+	[ -n "${ipv6_export?}" ] && printf "\t\texport %s;\n" "${ipv6_export:?}"
+	[ -n "${ipv6_extended_next_hop?}" ] && printf "\t\textended next hop;\n"
+	printf "\t};\n"
+fi
+
+# Header close
+echo "}"
diff --git a/type/__bird_bgp/man.rst b/type/__bird_bgp/man.rst
new file mode 100644
index 0000000..7b55ab5
--- /dev/null
+++ b/type/__bird_bgp/man.rst
@@ -0,0 +1,105 @@
+cdist-type__bird_bgp(7)
+=======================
+
+NAME
+----
+cdist-type__bird_bgp - configure an instance of the BGP protocol.
+
+
+DESCRIPTION
+-----------
+This type writes the configuration for an instance of the BGP protocol to be
+ran by the bird internet routing daemon. It **expects** to depend on the
+`cdist-type__bird_core(7)` type.
+
+
+REQUIRED PARAMETERS
+-------------------
+local-as
+    The number for the AS in which the daemon is running.
+
+neighbor-as
+    The number of the AS with which we are peering.
+
+neighbor-ip
+    The IP address of the peer we are opening a session with.
+
+
+OPTIONAL PARAMETERS
+-------------------
+description
+    An instance desciption to be printed when `birdc show protocols` is called.
+
+local-ip
+    The IP address used as a source address for the BGP session.
+
+password
+    A password for the BGP session.
+
+ipv4-import
+    A string suitable for the bird `import` directive. Usually `all`, `none` or
+    a filter definition.
+
+ipv4-export
+    See ipv4-import.
+
+ipv4-extended-next-hop
+    Allow IPv6 next hop in IPv4 NLRI.
+
+ipv6-import
+    See ipv4-import.
+
+ipv6-export
+    See ipv4-import.
+
+ipv6-extended-next-hop
+    Allow IPv4 next hop in IPv6 NLRI.
+
+
+BOOLEAN PARAMETERS
+------------------
+direct
+    Specify that the two routers are directly connected.
+
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+    # Setup bird and open a BGP session.
+    __bird_core --router-id 198.51.100.4
+
+    require='__bird_core' __bird_bgp bgp4 \
+        --description "a test IPv4 BGP instance" \
+        --ipv4-export all \
+        --ipv4-import all \
+        --ipv6-export none \
+        --ipv6-import none \
+        --local-as 1234 \
+        --local-ip 198.51.100.4 \
+        --neighbor-as 4321 \
+        --neighbor-ip 198.51.100.3 \
+        --password hunter01
+
+
+SEE ALSO
+--------
+cdist-type__bird_core(7)
+cdist-type__bird_filter(7)
+cdist-type__bird_kernel(7)
+cdist-type__bird_ospf(7)
+cdist-type__bird_static(7)
+
+
+AUTHORS
+-------
+Joachim Desroches <joachim.desroches@epfl.ch>
+
+
+COPYING
+-------
+Copyright \(C) 2021 Joachim Desroches. You can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
diff --git a/type/__bird_bgp/manifest b/type/__bird_bgp/manifest
new file mode 100755
index 0000000..a1d79f2
--- /dev/null
+++ b/type/__bird_bgp/manifest
@@ -0,0 +1,123 @@
+#!/bin/sh -e
+#
+# 2021 Joachim Desroches (joachim.desroches@epfl.ch)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+
+os=$(cat "${__global:?}/explorer/os")
+
+case "$os" in
+	"alpine"|"debian"|"ubuntu")
+		confdir="/etc/bird.d"
+	;;
+	*)
+		printf "Your operating system (%s) is currently not supported by __bird_bgp\n" "$os" >&2
+		printf "Please contribute an implementation for it if you can.\n" >&2
+		exit 1
+	;;
+esac
+
+# Required parameters
+local_as="$(cat "${__object:?}"/parameter/local-as)"
+export local_as
+
+neighbor_as="$(cat "${__object:?}"/parameter/neighbor-as)"
+export neighbor_as
+
+neighbor_ip="$(cat "${__object:?}"/parameter/neighbor-ip)"
+export neighbor_ip
+
+# Optional parameters
+description=
+if [ -f "${__object:?}"/parameter/description ];
+then
+	description="$(cat "${__object:?}"/parameter/description)"
+fi
+export description
+
+direct=
+if [ -f "${__object:?}"/parameter/direct ];
+then
+	direct="true"
+fi
+export direct
+
+ipv4_extended_next_hop=
+if [ -f "${__object:?}"/parameter/ipv4-extended-next-hop ];
+then
+	ipv4_extended_next_hop="true"
+fi
+export ipv4_extended_next_hop
+
+ipv6_extended_next_hop=
+if [ -f "${__object:?}"/parameter/ipv6-extended-next-hop ];
+then
+	ipv6_extended_next_hop="true"
+fi
+export ipv6_extended_next_hop
+
+local_ip=
+if [ -f "${__object:?}"/parameter/local-ip ];
+then
+	local_ip="$(cat "${__object:?}"/parameter/local-ip)"
+fi
+export local_ip
+
+password=
+if [ -f "${__object:?}"/parameter/password ];
+then
+	password="$(cat "${__object:?}"/parameter/password)"
+fi
+export password
+
+ipv4_import=
+if [ -f "${__object:?}"/parameter/ipv4-import ];
+then
+	ipv4_import="$(cat "${__object:?}"/parameter/ipv4-import)"
+	echo "FOO" >&2
+fi
+export ipv4_import
+
+ipv4_export=
+if [ -f "${__object:?}"/parameter/ipv4-export ];
+then
+	ipv4_export="$(cat "${__object:?}"/parameter/ipv4-export)"
+fi
+export ipv4_export
+
+ipv6_import=
+if [ -f "${__object:?}"/parameter/ipv6-import ];
+then
+	ipv6_import="$(cat "${__object:?}"/parameter/ipv6-import)"
+fi
+export ipv6_import
+
+ipv6_export=
+if [ -f "${__object:?}"/parameter/ipv6-export ];
+then
+	ipv6_export="$(cat "${__object:?}"/parameter/ipv6-export)"
+fi
+export ipv6_export
+
+# Run template
+"${__type:?}"/files/template.sh > "${__files:?}/bgp-${__object_id:?}.conf"
+
+# Install resulting configuration
+__file "${confdir:?}"/bgp-"${__object_id:?}".conf \
+	--mode 0640 --owner root --group bird \
+	--source "${__files:?}/bgp-${__object_id:?}.conf"
diff --git a/type/__bird_bgp/parameter/boolean b/type/__bird_bgp/parameter/boolean
new file mode 100644
index 0000000..1c34b58
--- /dev/null
+++ b/type/__bird_bgp/parameter/boolean
@@ -0,0 +1,3 @@
+direct
+ipv4-extended-next-hop
+ipv6-extended-next-hop
diff --git a/type/__bird_bgp/parameter/optional b/type/__bird_bgp/parameter/optional
new file mode 100644
index 0000000..b9624a9
--- /dev/null
+++ b/type/__bird_bgp/parameter/optional
@@ -0,0 +1,7 @@
+description
+ipv4-export
+ipv4-import
+ipv6-export
+ipv6-import
+local-ip
+password
diff --git a/type/__bird_bgp/parameter/required b/type/__bird_bgp/parameter/required
new file mode 100644
index 0000000..9b82660
--- /dev/null
+++ b/type/__bird_bgp/parameter/required
@@ -0,0 +1,3 @@
+local-as
+neighbor-as
+neighbor-ip
diff --git a/type/__bird_core/man.rst b/type/__bird_core/man.rst
new file mode 100644
index 0000000..7bf3dc1
--- /dev/null
+++ b/type/__bird_core/man.rst
@@ -0,0 +1,65 @@
+cdist-type__bird-core(7)
+========================
+
+NAME
+----
+cdist-type__bird-core - setup a skeleton bird configuration.
+
+
+DESCRIPTION
+-----------
+The `bird`_ daemon is an internet routing daemon, running protocols such as
+OSPF and BGP. This type creates a skeleton configuration file suitable for
+running a no-op bird. It is then intended to be combined - and depended on - by
+types specific to the instances of the various protocols that bird should run.
+
+.. _bird: https://bird.network.cz/
+
+OPTIONAL PARAMETERS
+-------------------
+router-id
+    This parameter follows the format of an IPv4 address, and will be used by
+    bird as its router id. See `the documentation for router id`_.
+
+.. _the documentation for router id: https://bird.network.cz/?get_doc&v=20&f=bird-3.html#opt-router-id
+
+log-params
+
+    This parameter expects a string suitable to follow the `log` bird
+    configuration key. If this parameter is not include, the value `syslog all`
+    is used. See `the documentation for log`_.
+
+.. _the documentation for log: https://bird.network.cz/?get_doc&v=20&f=bird-3.html#opt-log
+
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+    __bird-core --router-id 198.51.100.4
+
+    require='__bird-core' __bird_bgp <...>
+    require='__bird-core' __bird_ospf <...>
+
+
+SEE ALSO
+--------
+cdist-type__bird_bgp(7)
+cdist-type__bird_filter(7)
+cdist-type__bird_kernel(7)
+cdist-type__bird_ospf(7)
+cdist-type__bird_static(7)
+
+
+AUTHORS
+-------
+Joachim Desroches <joachim.desroches@epfl.ch>
+
+
+COPYING
+-------
+Copyright \(C) 2021 Joachim Desroches. You can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
diff --git a/type/__bird_core/manifest b/type/__bird_core/manifest
new file mode 100755
index 0000000..be24da0
--- /dev/null
+++ b/type/__bird_core/manifest
@@ -0,0 +1,72 @@
+#!/bin/sh -e
+#
+# 2021 Joachim Desroches (joachim.desroches@epfl.ch)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+
+os=$(cat "${__global:?}/explorer/os")
+
+package=
+conffile=
+confdir=
+case "$os" in
+	"alpine")
+		package=bird
+		conffile=/etc/bird.conf
+		confdir=/etc/bird.d
+	;;
+	*)
+		printf "Your operating system (%s) is currently not supported by __bird_core\n" "$os" >&2
+		printf "Please contribute an implementation for it if you can.\n" >&2
+		exit 1
+	;;
+esac
+
+router_id=
+if [ -f "${__object:?}/parameter/router-id" ];
+then
+	router_id="router id $(cat "${__object:?}"/parameter/router-id);"
+fi
+
+log_params="syslog all"
+if [ -f "${__object:?}/parameter/log-params" ];
+then
+	log_params="$(cat "${__object:?}"/parameter/log-params)"
+fi
+
+__package "$package"
+
+__directory "$confdir"
+
+__file "$conffile" \
+	--mode 0640 --owner root --group bird \
+	--source - << EOF
+# $conffile - bird(1) configuration file.
+# Managed by cdist. Do not edit by hand.
+
+${router_id}
+log ${log_params};
+
+# Always include this "protocol": all it does is expose the available
+# interfaces to bird.
+protocol device {
+	description "Obtain a list of device interfaces.";
+}
+
+include "$confdir/*.conf";
+EOF
diff --git a/type/__bird_core/parameter/optional b/type/__bird_core/parameter/optional
new file mode 100644
index 0000000..40d74bf
--- /dev/null
+++ b/type/__bird_core/parameter/optional
@@ -0,0 +1 @@
+log-params
diff --git a/type/__bird_core/parameter/required b/type/__bird_core/parameter/required
new file mode 100644
index 0000000..8fb6ae6
--- /dev/null
+++ b/type/__bird_core/parameter/required
@@ -0,0 +1 @@
+router-id
diff --git a/type/__bird_core/singleton b/type/__bird_core/singleton
new file mode 100644
index 0000000..e69de29
diff --git a/type/__bird_filter/man.rst b/type/__bird_filter/man.rst
new file mode 100644
index 0000000..a1ebf0b
--- /dev/null
+++ b/type/__bird_filter/man.rst
@@ -0,0 +1,63 @@
+cdist-type__bird_filter(7)
+==========================
+
+NAME
+----
+cdist-type__bird_filter - Create a named filter to use in configuring bird.
+
+
+DESCRIPTION
+-----------
+This type writes a configuration file defining a filter named `__object_id` for
+the bird internet routing daemon. It is guaranteed that all filters defined
+through this type will be loaded before any other protocol defined using the
+cdist __bird_xxx types, except functions. However, note that if two filters
+have a dependency, they will be loaded in alphabetical order, so some care may
+need to be taken in the naming.
+
+This type takes it's input through stdin, expecting valid filter statements as
+per the bird configuration file syntax. The standard input will be printed out
+between a `filter __object_id {\n ... \n}`, so only the inner statements are
+needed.
+
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+    # Setup bird, a filter and open a BGP session.
+    __bird_core --router-id 198.51.100.4
+
+    require='__bird_core' __bird_filter bgp_export <<- EOF
+        if (source = RTS_DEVICE) then accept;
+        reject;
+    EOF
+
+    require='__bird_core' __bird_bgp bgp4 \
+        --description "a test IPv4 BGP instance" \
+        --ipv4-export "filter bgp_export" \
+        --[...]
+
+
+SEE ALSO
+--------
+cdist-type__bird_core(7)
+cdist-type__bird_bgp(7)
+cdist-type__bird_function(7)
+cdist-type__bird_kernel(7)
+cdist-type__bird_ospf(7)
+cdist-type__bird_static(7)
+
+
+AUTHORS
+-------
+Joachim Desroches <joachim.desroches@epfl.ch>
+
+
+COPYING
+-------
+Copyright \(C) 2021 Joachim Desroches. You can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
diff --git a/type/__bird_filter/manifest b/type/__bird_filter/manifest
new file mode 100755
index 0000000..9579598
--- /dev/null
+++ b/type/__bird_filter/manifest
@@ -0,0 +1,44 @@
+#!/bin/sh -e
+#
+# 2021 Joachim Desroches (joachim.desroches@epfl.ch)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+
+os=$(cat "${__global:?}/explorer/os")
+
+case "$os" in
+'alpine'|'debian'|'ubuntu')
+	confdir=/etc/bird.d
+	;;
+*)
+	printf "Your operating system (%s) is currently not supported by __bird_filter\n" "$os" >&2
+	printf "Please contribute an implementation for it if you can.\n" >&2
+	exit 1
+	;;
+esac
+
+# Filters start with 1 because bird loads the config in alphanumerical order
+# and we need them to be defined to be used in the rest of the stuff, but after
+# functions.
+__file "$confdir/1-filter-${__object_id:?}.conf" \
+	--owner root --group bird --mode 0640 \
+	--source - << EOF
+filter ${__object_id:?} {
+$(cat "${__object:?}"/stdin)
+}
+EOF
diff --git a/type/__bird_function/man.rst b/type/__bird_function/man.rst
new file mode 100644
index 0000000..b5488ec
--- /dev/null
+++ b/type/__bird_function/man.rst
@@ -0,0 +1,58 @@
+cdist-type__bird_function(7)
+============================
+
+NAME
+----
+cdist-type__bird_function - Create a named function to use in configuring bird.
+
+
+DESCRIPTION
+-----------
+
+This type writes a configuration file for the bird internet routing daemon. It
+is guaranteed that all functions defined through this type will be loaded
+before any other protocol defined using the cdist __bird_xxx types. However,
+note that if two functions have a dependency, they will be loaded in
+alphabetical order, so some care may need to be taken in the naming.
+
+This type takes it's input through stdin, expecting a valid function definition
+as per the bird configuration file syntax.
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+    # Setup bird, a function and open a BGP session.
+    __bird_core --router-id 198.51.100.4
+
+    require='__bird_core' __bird_function is_device <<- EOF
+        function is_device (enum source)
+        {
+        if (source = RTS_DEVICE) then return true;
+        return false;
+        }
+    EOF
+
+
+SEE ALSO
+--------
+cdist-type__bird_core(7)
+cdist-type__bird_bgp(7)
+cdist-type__bird_filter(7)
+cdist-type__bird_kernel(7)
+cdist-type__bird_ospf(7)
+cdist-type__bird_static(7)
+
+
+AUTHORS
+-------
+Joachim Desroches <joachim.desroches@epfl.ch>
+
+
+COPYING
+-------
+Copyright \(C) 2021 Joachim Desroches. You can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
diff --git a/type/__bird_function/manifest b/type/__bird_function/manifest
new file mode 100755
index 0000000..9a93f35
--- /dev/null
+++ b/type/__bird_function/manifest
@@ -0,0 +1,41 @@
+#!/bin/sh -e
+#
+# 2021 Joachim Desroches (joachim.desroches@epfl.ch)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+
+os=$(cat "${__global:?}/explorer/os")
+
+case "$os" in
+'alpine'|'debian'|'ubuntu')
+	confdir=/etc/bird.d
+	;;
+*)
+	printf "Your operating system (%s) is currently not supported by __bird_filter\n" "$os" >&2
+	printf "Please contribute an implementation for it if you can.\n" >&2
+	exit 1
+	;;
+esac
+
+# Functions start with 0 because bird loads the config in alphanumerical order
+# and we need them to be defined to be used in the rest of the stuff.
+__file "$confdir/0-function-${__object_id:?}.conf" \
+	--owner root --group bird --mode 0640 \
+	--source - << EOF
+$(cat "${__object:?}"/stdin)
+EOF
diff --git a/type/__bird_kernel/man.rst b/type/__bird_kernel/man.rst
new file mode 100644
index 0000000..34f1c49
--- /dev/null
+++ b/type/__bird_kernel/man.rst
@@ -0,0 +1,73 @@
+cdist-type__bird_kernel(7)
+==========================
+
+NAME
+----
+cdist-type__bird_kernel - configure syncing of routes with the kernel.
+
+
+DESCRIPTION
+-----------
+
+This type writes the configuration for an instance of the kernel protocol to be
+ran by the bird internet routing daemon. It **expects** to depend on the
+`cdist-type__bird_core(7)` type.
+
+OPTIONAL PARAMETERS
+-------------------
+description
+    An instance desciption to be printed when `birdc show protocols` is called.
+
+persist
+    Instruct bird to leave routes in kernel table after exiting. See the bird
+    `persist` keyword.
+
+learn
+    Learn routes added externally to the kernel routing table. See the bird
+    `learn` keyword.
+
+channel
+    The channel to connect the protocol to. Usually `ipv4` or `ipv6`.
+
+import
+    A string suitable for the bird `import` directive. Usually `all`, `none` or
+    a filter definition.
+
+export
+    See import.
+
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+    # Setup bird and open a BGP session.
+    __bird_core --router-id 198.51.100.4
+
+    require='__bird_core' __bird_kernel k4 \
+        --learn --persist --channel ipv4 \
+        --import all \
+        --export all
+
+
+SEE ALSO
+--------
+cdist-type__bird_bgp(7)
+cdist-type__bird_core(7)
+cdist-type__bird_filter(7)
+cdist-type__bird_ospf(7)
+cdist-type__bird_static(7)
+
+
+AUTHORS
+-------
+Joachim Desroches <joachim.desroches@epfl.ch>
+
+
+COPYING
+-------
+Copyright \(C) 2021 Joachim Desroches. You can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
diff --git a/type/__bird_kernel/manifest b/type/__bird_kernel/manifest
new file mode 100755
index 0000000..c5d2eac
--- /dev/null
+++ b/type/__bird_kernel/manifest
@@ -0,0 +1,83 @@
+#!/bin/sh -e
+#
+# 2021 Joachim Desroches (joachim.desroches@epfl.ch)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+
+os=$(cat "${__global:?}/explorer/os")
+
+case "$os" in
+	"alpine"|"debian"|"ubuntu")
+		confdir="/etc/bird.d"
+	;;
+	*)
+		printf "Your operating system (%s) is currently not supported by __bird_kernel\n" "$os" >&2
+		printf "Please contribute an implementation for it if you can.\n" >&2
+		exit 1
+	;;
+esac
+
+# Required parameters
+channel="$(cat "${__object:?}/parameter/channel")"
+
+# Boolean switches
+persist=
+if [ -f "${__object:?}"/parameter/persist ];
+then
+	persist=true
+fi
+
+learn=
+if [ -f "${__object:?}"/parameter/learn ];
+then
+	learn=true
+fi
+
+# Optional parameters
+description=
+if [ -f "${__object:?}"/parameter/description ];
+then
+	description="$(cat "${__object:?}/parameter/description")"
+fi
+
+import=
+if [ -f "${__object:?}"/parameter/import ];
+then
+	import="$(cat "${__object:?}/parameter/import")"
+fi
+
+_export=
+if [ -f "${__object:?}"/parameter/export ];
+then
+	_export="$(cat "${__object:?}/parameter/export")"
+fi
+
+# Install resulting configuration
+__file "${confdir:?}"/kernel-"${__object_id:?}".conf \
+	--mode 0640 --owner root --group bird \
+	--source - << EOF
+protocol kernel ${__object_id:?} {
+$([ -n "${description?}" ] && printf "\tdescription \"%s\";\n" "${description?}")
+$([ -n "${persist?}" ] && printf "\tpersist;\n")
+$([ -n "${learn?}" ] && printf "\tlearn;\n")
+	${channel:?} {
+		import ${import:?};
+		export ${_export:?};
+	};
+}
+EOF
diff --git a/type/__bird_kernel/parameter/boolean b/type/__bird_kernel/parameter/boolean
new file mode 100644
index 0000000..6499685
--- /dev/null
+++ b/type/__bird_kernel/parameter/boolean
@@ -0,0 +1,2 @@
+learn
+persist
diff --git a/type/__bird_kernel/parameter/optional b/type/__bird_kernel/parameter/optional
new file mode 100644
index 0000000..e1b39b0
--- /dev/null
+++ b/type/__bird_kernel/parameter/optional
@@ -0,0 +1 @@
+description
diff --git a/type/__bird_kernel/parameter/required b/type/__bird_kernel/parameter/required
new file mode 100644
index 0000000..a87a501
--- /dev/null
+++ b/type/__bird_kernel/parameter/required
@@ -0,0 +1,3 @@
+channel
+import
+export
diff --git a/type/__bird_ospf/man.rst b/type/__bird_ospf/man.rst
new file mode 100644
index 0000000..9b9a20f
--- /dev/null
+++ b/type/__bird_ospf/man.rst
@@ -0,0 +1,56 @@
+cdist-type__bird-ospf(7)
+========================
+
+NAME
+----
+cdist-type__bird-ospf - Configure an instance of the OSPF protocol
+
+
+DESCRIPTION
+-----------
+
+This type is an *extremely rudimentary* method to configure a simple OSPF
+protocol instance for bird, the internet routing daemon. Even this manpage is
+pretty crude and will be fixed and expanded.
+
+REQUIRED PARAMETERS
+-------------------
+channel
+    The channel the protocol should connect to. Usually `ipv4` or `ipv6`.
+
+import
+    The keyword or filter to decide what to import in the above channel.
+
+export
+    The keyword or filter to decide what to export in the above channel.
+
+
+REQUIRED MULTIPLE PARAMETERS
+----------------------------
+interface
+    An interface to include in OSPF area 0.
+
+OPTIONAL PARAMETERS
+-------------------
+description
+    A description given with `show protocol all`
+
+instance-id
+    An OSPF instance ID, allowing several OSPF instances to run on the same
+    links.
+
+SEE ALSO
+--------
+cdist-type__bird_core(7)
+
+AUTHORS
+-------
+Joachim Desroches <joachim.desroches@epfl.ch>
+
+
+COPYING
+-------
+Copyright \(C) 2021 Joachim Desroches. You can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
diff --git a/type/__bird_ospf/manifest b/type/__bird_ospf/manifest
new file mode 100755
index 0000000..0e219ae
--- /dev/null
+++ b/type/__bird_ospf/manifest
@@ -0,0 +1,63 @@
+#!/bin/sh -e
+#
+# 2021 Joachim Desroches (joachim.desroches@epfl.ch)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+
+os=$(cat "${__global:?}/explorer/os")
+
+case "$os" in
+'alpine'|'debian'|'ubuntu')
+	confdir='/etc/bird.d'
+;;
+*)
+	printf "Your operating system (%s) is currently not supported by this __bird_ospf\n" "$os" >&2
+	printf "Please contribute an implementation for it if you can.\n" >&2
+	exit 1
+;;
+esac
+
+description=
+if [ -f "${__object:?}/parameter/description" ];
+then
+	description="$(cat "${__object:?}/parameter/description")"
+fi
+
+instance_id=
+if [ -f "${__object:?}/parameter/instance-id" ];
+then
+	instance_id="$(cat "${__object:?}/parameter/instance-id")"
+fi
+
+__file "${confdir:?}/ospf-${__object_id:?}.conf" \
+	--mode 0640 --owner root --group bird \
+	--source - << EOF
+protocol ospf v3 ${__object_id:?} {
+$([ -n "${description?}" ] && printf "\tdescription \"%s\";\n" "${description?}")
+$([ -n "${instance_id?}" ] && printf "\tinstance id %s;\n" "${instance_id?}")
+
+	$(cat "${__object:?}/parameter/channel") {
+		import $(cat "${__object:?}/parameter/import");
+		export $(cat "${__object:?}/parameter/export");
+	};
+
+	area 0 {
+$(sed -e 's/^/\t\tinterface "/' -e 's/$/";/' "${__object:?}/parameter/interface")
+	};
+}
+EOF
diff --git a/type/__bird_ospf/parameter/optional b/type/__bird_ospf/parameter/optional
new file mode 100644
index 0000000..cf6dd53
--- /dev/null
+++ b/type/__bird_ospf/parameter/optional
@@ -0,0 +1,2 @@
+description
+instance-id
diff --git a/type/__bird_ospf/parameter/required b/type/__bird_ospf/parameter/required
new file mode 100644
index 0000000..a87a501
--- /dev/null
+++ b/type/__bird_ospf/parameter/required
@@ -0,0 +1,3 @@
+channel
+import
+export
diff --git a/type/__bird_ospf/parameter/required_multiple b/type/__bird_ospf/parameter/required_multiple
new file mode 100644
index 0000000..b529896
--- /dev/null
+++ b/type/__bird_ospf/parameter/required_multiple
@@ -0,0 +1 @@
+interface
diff --git a/type/__bird_static/files/template.sh b/type/__bird_static/files/template.sh
new file mode 100755
index 0000000..05b5215
--- /dev/null
+++ b/type/__bird_static/files/template.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+# Template to generate a static protocol configuration file for bird(1).
+# Required non-empty variables:
+# __object_id, object
+#
+# Required defined variables:
+# description
+
+# Header
+printf "protocol static %s {\n" "${__object_id:?}"
+
+# Optional description
+[ -n "${description?}" ] && printf "\tdescription \"%s\";\n" "${description:?}"
+
+# Channel choice
+if [ -f "${__object:?}/parameter/ipv4" ];
+then
+	printf "\tipv4;\n"
+else
+	printf "\tipv6;\n"
+fi
+
+# Routes
+while read -r route
+do
+	printf "\troute %s;\n" "${route?}"
+done < "${__object:?}/parameter/route"
+
+# Header close
+printf "}\n"
diff --git a/type/__bird_static/man.rst b/type/__bird_static/man.rst
new file mode 100644
index 0000000..f42474a
--- /dev/null
+++ b/type/__bird_static/man.rst
@@ -0,0 +1,69 @@
+cdist-type__bird_static(7)
+==========================
+
+NAME
+----
+cdist-type__bird_static - configure an instance of the bird static protocol.
+
+
+DESCRIPTION
+-----------
+This type write the configuration file for an instance of the static protocl to
+be ran bu the bird internet routing daemon, allowing an administrator to inject
+static routes into the daemon's routing tables. This protocol allows for only
+one of two channels to be used, either `ipv4` or `ipv6`, by default `ipv6` is
+used unless the `ipv4` flag is passed. This type **expects** to depend on the
+`cdist-type__bird_core(7)` type.
+
+
+REQUIRED MULTIPLE PARAMETERS
+----------------------------
+route
+    This flag expects a valid route to be inserted between the bird `route`
+    keyword and the end of line. It may be specified as many times as necessary.
+
+
+OPTIONAL PARAMETERS
+-------------------
+description
+    An instance desciption to be printed when `birdc show protocols` is called.
+
+BOOLEAN PARAMETERS
+------------------
+ipv4
+   Use the ipv4 channel instead of the default ipv6 one.
+
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+    # Setup bird and open a BGP session.
+    __bird_core --router-id 198.51.100.4
+
+    require='__bird_core' __bird_static static4 \
+        --description "static ipv4 routes plugged into bird" \
+        --route "198.51.0.0/16 via 192.51.100.1" \
+        --route "192.52.0.0/16 via 192.51.100.1"
+
+
+SEE ALSO
+--------
+cdist-type__bird_core(7)
+cdist-type__bird_bgp(7)
+cdist-type__bird_kernel(7)
+cdist-type__bird_ospf(7)
+
+
+AUTHORS
+-------
+Joachim Desroches <joachim.desroches@epfl.ch>
+
+
+COPYING
+-------
+Copyright \(C) 2021 Joachim Desroches. You can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
diff --git a/type/__bird_static/manifest b/type/__bird_static/manifest
new file mode 100755
index 0000000..722971b
--- /dev/null
+++ b/type/__bird_static/manifest
@@ -0,0 +1,51 @@
+#!/bin/sh -e
+#
+# 2021 Joachim Desroches (joachim.desroches@epfl.ch)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+
+os=$(cat "${__global:?}/explorer/os")
+
+case "$os" in
+	'alpine'|'debian'|'ubuntu')
+		confdir=/etc/bird.d
+	;;
+	*)
+		printf "Your operating system (%s) is currently not supported by __bird_static\n" "$os" >&2
+		printf "Please contribute an implementation for it if you can.\n" >&2
+		exit 1
+	;;
+esac
+
+# Required parameter route is directly accessed in template.
+# Boolean  parameter ipv4  is directly accessed in template.
+# Optional parameter description
+description=
+if [ -f "${__object:?}/parameter/description" ];
+then
+	description="$(cat "${__object:?}/parameter/description")"
+fi
+export description
+
+# Run template
+"${__type:?}"/files/template.sh > "${__files:?}/static-${__object_id:?}.conf"
+
+# Install resulting configuration
+__file "${confdir:?}"/static-"${__object_id:?}".conf \
+	--mode 0640 --owner root --group bird \
+	--source "${__files:?}/static-${__object_id:?}.conf"
diff --git a/type/__bird_static/parameter/boolean b/type/__bird_static/parameter/boolean
new file mode 100644
index 0000000..53bb6dd
--- /dev/null
+++ b/type/__bird_static/parameter/boolean
@@ -0,0 +1 @@
+ipv4
diff --git a/type/__bird_static/parameter/optional b/type/__bird_static/parameter/optional
new file mode 100644
index 0000000..e1b39b0
--- /dev/null
+++ b/type/__bird_static/parameter/optional
@@ -0,0 +1 @@
+description
diff --git a/type/__bird_static/parameter/required_multiple b/type/__bird_static/parameter/required_multiple
new file mode 100644
index 0000000..6f36346
--- /dev/null
+++ b/type/__bird_static/parameter/required_multiple
@@ -0,0 +1 @@
+route