For months I've been running 12.04 headless home server with a bridge connected through eth0. I've been using this /etc/network/interfaces file:

 auto lo

 iface lo inet loopback



 auto br0

 iface br0 inet static

        address 192.168.8.1

        netmask 255.255.255.0

        network 192.168.8.0

        broadcast 192.168.8.255

        gateway 192.168.8.2

        dns-nameservers 192.168.8.2

        dns-search cluster.toy

        pre-up ip link set eth0 down

        pre-up brctl addbr br0

        pre-up brctl addif br0 eth0

        pre-up ip link set eth0 up

        post-down ip link set eth0 down

        post-down ip link set br0 down

        post-down brctl delif br0 eth0

        post-down brctl delbr br0

However, after a weird network error I looked at my logs and saw that NetworkManager was repeatedly trying to bring up eth0, which it absolutely should not be doing (eth0 is a slave to br0, which is statically configured).

My understanding is that since I have NetworkManager.conf set with this setting:

[ifupdown]

managed=false

It is supposed to ignore any interfaces mentioned in the /etc/network/interfaces file. So I have some questions:

• Am I missing something, or is there a bug in NetworkManager that it doesn't parse bridge stanzas in /etc/network/interfaces correctly to know to ignore them?


• Is there some sort of dummy statement I now have to put in /etc/network/interfaces to trick network manager into leaving it alone?


• Alternatively, can I just apt-get remove network-manager with no negative consequences?