=========================mmarkk at imac:~# brctl addbr qwe mmarkk at imac:~# unshare -n /bin/bash root at imac:~# ip link 14: lo: <LOOPBACK> mtu 16436 qdisc noop state DOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 root at imac:~# brctl show bridge name bridge id STP enabled interfaces qwe 8000.000000000000 no root at imac:~# brctl delbr qwe bridge qwe doesn't exist; can't delete it ============================ So, network device is not available, but present in list of bridges. This is the bug, as I think. Reproducible in linux kernels 3.8.2 and 3.2.0 -- Segmentation fault -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linuxfoundation.org/pipermail/bridge/attachments/20130329/eb2ecf11/attachment.html>