diff --git a/uncloud/hack/hackcloud/.gitignore b/uncloud/hack/hackcloud/.gitignore
new file mode 100644
index 0000000..0ad647b
--- /dev/null
+++ b/uncloud/hack/hackcloud/.gitignore
@@ -0,0 +1,3 @@
+*.iso
+radvdpid
+foo
diff --git a/uncloud/hack/hackcloud/foo b/uncloud/hack/hackcloud/foo
deleted file mode 100644
index 1033abf..0000000
--- a/uncloud/hack/hackcloud/foo
+++ /dev/null
@@ -1,2 +0,0 @@
-tap0
-tap0
diff --git a/uncloud/hack/hackcloud/ifup.sh b/uncloud/hack/hackcloud/ifup.sh
index 95bfe5a..99e8690 100755
--- a/uncloud/hack/hackcloud/ifup.sh
+++ b/uncloud/hack/hackcloud/ifup.sh
@@ -6,3 +6,4 @@ dev=$1; shift
 
 # bridge is setup from outside
 ip link set dev "$dev" master ${bridge}
+ip link set dev "$dev" up
diff --git a/uncloud/hack/hackcloud/net.sh b/uncloud/hack/hackcloud/net.sh
index e56822f..7d4b88f 100755
--- a/uncloud/hack/hackcloud/net.sh
+++ b/uncloud/hack/hackcloud/net.sh
@@ -5,6 +5,7 @@ dev=wlp2s0
 dev=wlp0s20f3
 dev=wlan0
 
+ip=2a0a:e5c1:111:888::42/64
 vxlandev=vxlan${netid}
 bridgedev=br${netid}
 
@@ -19,3 +20,5 @@ ip link set ${vxlandev} up
 
 ip link add ${bridgedev} type bridge
 ip link set ${bridgedev} up
+
+ip addr add ${ip} dev ${bridgedev}
diff --git a/uncloud/hack/hackcloud/radvd.conf b/uncloud/hack/hackcloud/radvd.conf
new file mode 100644
index 0000000..3d8ce4d
--- /dev/null
+++ b/uncloud/hack/hackcloud/radvd.conf
@@ -0,0 +1,13 @@
+interface br100
+{
+  AdvSendAdvert on;
+  MinRtrAdvInterval 3;
+  MaxRtrAdvInterval 5;
+  AdvDefaultLifetime 3600;
+
+  prefix 2a0a:e5c1:111:888::/64 {
+  };
+
+  RDNSS 2a0a:e5c0::3 2a0a:e5c0::4 { AdvRDNSSLifetime 6000; };
+  DNSSL place7.ungleich.ch {  AdvDNSSLLifetime 6000; } ;
+};
diff --git a/uncloud/hack/hackcloud/radvd.sh b/uncloud/hack/hackcloud/radvd.sh
new file mode 100644
index 0000000..9d0e7d1
--- /dev/null
+++ b/uncloud/hack/hackcloud/radvd.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+radvd -C ./radvd.conf  -n -p ./radvdpid