[CentOS] CentOS 6 - VM network bridge issue (SOLVED)
Emmett Culley
emmett at webengineer.comWed Jul 20 14:23:44 UTC 2011
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On 07/20/2011 01:24 AM, James Hogarth wrote: >>> >>> Initial thought is a routing issue particularly with multiple NICs. >>> >>> What does 'ip r s' reveal? >>> >> That was it! ip r s showed that I had the local facing NIC (eth1) as the gateway, which caused all outgoing packets to be routed to the local network DUH!. >> > > Yup been there before..... > > So long as the local NIC doesn't need to hit any other internal > subnets you'll be fine... otherwise don't forget to add the > appropriate RFC1918 static routes to go out that interface with the > default being the external one.... > > Also another thing to watch out for is asymmetric routing. If it is > possible to get to a destination via either interface and due to > routing issues elsewhere the packet does not return to the same > interface through the same gateway you can get odd behaviour.... In > which case you would need to set up policy routing rules to ensure > stuff enters/leaves the right way... but dont' worry about that for > now - just remember it for later if you get odd network behaviour.... > Thanks James, I keep it in mind, but by the time it happens I'll need Google again to find this thread :-)
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