On 8/11/12, Alan Batie <alan at peak.org> wrote: > We've been running ipv6 for a year or so now, but some of our newer > instances (all on an ESX cluster) are not working. It looks like it's > all of our Centos 6 instances. I'm hoping someone can point me in the > right direction... > <centos666.peak.org> [27] # cat ifcfg-eth0 > DEVICE="eth0" > NM_CONTROLLED="no" > ONBOOT="yes" > TYPE=Ethernet > BOOTPROTO=none > IPADDR=207.55.16.66 > PREFIX=22 > GATEWAY=207.55.16.1 Not sure if this is related/relevant but I remember reading this bug about problems if PREFIX is used instead of NETMASK. http://bugs.centos.org/view.php?id=5391