Package: bridge-utils Version: 1.5-14 This line in /lib/bridge-utils/bridge-utils.sh is problematic:
| if ! grep -q "$port:" /proc/net/dev 1. If there exists an interface whose name is a suffix of the interface that is to be added to the bridge, this line incorrectly detects it as already existing (like, eth0.3, if veth0.3 exists). 2. This line treats $port as a regular expression, which it isn't. eth1.2, for example would match eth102, and thus, again, incorrectly detect the interface as existing. Therefore, it should be replaced by something like this: | if ! sed 's/ *\(.*\):.*/\1/' /proc/net/dev | fgrep -qx -- "$port"
