[CentOS] How to specify the default route?

Thu Jun 24 11:47:45 UTC 2010
Jason Pyeron <jpyeron at pdinc.us>

> -----Original Message-----
> From: centos-bounces at centos.org 
> [mailto:centos-bounces at centos.org] On Behalf Of Dominik Zyla
> Sent: Wednesday, June 23, 2010 13:55
> To: centos at centos.org
> Subject: Re: [CentOS] How to specify the default route?
> 
> On Mon, Jun 21, 2010 at 07:57:13PM -0400, Rick Thomas wrote:
> > I have a machine with two net interfaces.
> > 
> > it seems to always pick the wrong one (eth1) as the default route.
> > 
> > I can change it with
> > 
> > 	route del default
> > 	route add default eth0
> > 
> > after it's up (or in rc.local, of course), but I'd like to 
> figure out 
> > what I need to do this "the CentOS way" (e.g. edit some 
> configuration 
> > file? Run some config utility, what?) once and for all.
> > 
> > Can somebody point me to the canonical documentation on the 
> subject?   
> > I've searched /usr/share/doc and the man pages, but I can't find 
> > anything useful.
> > 
> > Googling for "default route centos" gives some interesting 
> stuff, but 
> > nothing definitive.
> 
> route add default gw ${GATEWAYS_IP}

Our 2 nics are a wan(static) and lan(dhcp)

We set the default route for the wan, and when the dhcp lease expires and renews
it klobbers the default route with the lan's gateway.



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