Dear Maintainer, having FW node running "stable". fwbuilder is running on "unstable". Don't know if that matters. After adding a vlan sub-interface to one of the interface the installation of the fw script fails because of "ip" returning a completely different name for the interface. So the removal of the addresses fails and therefore the script gets stuck. vconfig add eth0 4 - create the interface; ipconfig shows it as eth0.4 ip link show - returns the interface as "eth0.4@eth0". The fw script no longer recognizes the interface The following change to the fw script makes it work again (at least for me) - $IP link show | sed 's/://g' | awk -v IGNORED="$*" \ + $IP link show | sed -e 's/://g' -e 's/@.*//g' | awk -v IGNORED="$*" \