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?