Paul, > What's the output of: > more /etc/sysconfig/network-scripts/ifcfg-eth* /etc/modprobe.conf Thank you - it's easy when you know where to look. eth1 and eth2 weren't set to start at boot, whereas eth0 and eth3 were. I have no idea how they got that way and had completely overlooked the checkbox on the network configuration screen, but setting that made them come up and stay up. A 'service network restart' now works exactly as I would expect. Now to go back to the bridge theme - where is the best place to set the 0.0.0.0 IP addresses ? In the network config, or should I leave that all in place and just reconfigure everything in rc.local ? Do the 'brctl' setting endure across boot sessions, or does the bridge need defining and setting up at every boot or network restart ? Jonathan