I am running LXC (SID) under Debian SID and the current git version of batman-adv (v3.7-rc7-1325-gaf5d4f7) +batctl (v2012.4.0-30-ga395164). But it fails to add any of my interfaces and non-batman-adv interfaces can be created without problems

# ip link 13: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000 link/ether 00:ff:aa:00:00:01 brd ff:ff:ff:ff:ff:ff 15: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN mode DEFAULT link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 # batctl if add eth0 Error - can't open file '/sys/class/net/eth0/batman_adv/mesh_iface': Read-only file system # ls -l /sys/class/net/eth0/batman_adv/mesh_iface -rw-r--r-- 1 root root 4096 Dec 30 18:26 /sys/class/net/eth0/batman_adv/mesh_iface # id uid=0(root) gid=0(root) groups=0(root) # ip link add dev br0 type bridge # ip link set dev eth0 master br0 # ip link 18: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP mode DEFAULT qlen 1000 link/ether 00:ff:aa:00:00:01 brd ff:ff:ff:ff:ff:ff 20: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN mode DEFAULT link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 21: br0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT link/ether 00:ff:aa:00:00:01 brd ff:ff:ff:ff:ff:ff