[CentOS] network connectivity lost after reboot/upgrade

Mon Mar 4 23:29:58 UTC 2013
Gordon Messmer <yinyang at eburg.com>

On 03/04/2013 01:54 PM, James Hogarth wrote:
> If you tcpdump do you see all the packets you'd expect for layer 2
> connectivity (ie ARP requests and responses?)

specifically, use tcpdump on your bridged interface:
	tcpdump -nn -i br0

Check your bridge details and make sure that the ethernet device is listed:
	brctl show

If those look good, send the content of 
/etc/sysconfig/network-scripts/ifcfg-{br0,eth0} (or whatever eth device 
is a member of the bridge).