[openwrt/nat64] add babel->kernel support

Needed for local ibgp routes

openwrt/openwrt-nat64-bootstrap.sh

@@ -9,19 +9,19 @@
 # Consequences
 # - do not provide IPv4 or IPv6 dhcp/ra on any interface
 
-if [ $# -lt 7 ] ; then
+if [ $# -lt 8 ] ; then
-    echo $0 "address hostname nat64prefix nat64route ipv4address ipv4gw asn routerid iBGPpeer1 [iBGPpeer2...]"
+    echo $0 "address hostname nat64prefix ipv4address ipv4gw asn routerid babelpw iBGPpeer1 [iBGPpeer2...]"
     exit 1
 fi
 
 address=$1; shift
 hostname=$1; shift
 nat64prefix=$1; shift
-nat64route=$1; shift
 ipv4address=$1; shift
 ipv4gw=$1; shift
 asn=$1; shift
 routerid=$1; shift
+babelpw=$1; shift
 ibgp_peers="$@"
 
 # Now $@ only contains iBGP peers
@@ -30,8 +30,8 @@ cat <<EOF | ssh -t "root@${address}"
 set -x
 opkg update
 
-# add jool + bird2
+# add jool + bird2 + tcpdump
-opkg install jool-tools-netfilter bird2 bird2c
+opkg install jool-tools-netfilter bird2 bird2c tcpdump tmux
 
 # Do not announce ULA - we have GUA
 uci delete network.globals.ula_prefix
@@ -73,9 +73,21 @@ cat > /etc/bird.conf <<BBB
 log syslog all;
 router id ${routerid};
 
+protocol device { }
+protocol bfd { }
+
+# Just announce, no kernel interaction
 protocol static static6 {
 	ipv6;
-	route ${nat64route} unreachable;
+	route ${nat64prefix} unreachable;
+}
+# for getting iBGP routes
+protocol babel {
+        interface "br-lan", "wan" { type wired; authentication mac; password "${babelpw}"; };
+        ipv6 { export where (source = RTS_DEVICE) || (source = RTS_BABEL); };
+}
+protocol kernel kernel_v6 {
+        ipv6 { export export where source ~ [ RTS_BABEL ]; };
 }
 BBB