Re: [LARTC] route with different metric

Linux Advanced Routing and Traffic Control

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On Wed, Sep 26, 2001 at 02:05:42PM -0400, Adrian Chung wrote:

> If this machine is also running daemons, does it send replies back out
> the same interface they came in on?  That'll break a lot of things if
> you receive packets via ISP1, and send replies back via ISP2.

That sometimes happens - policy routing can help with that problem:

$ ip rule ls
0:	from all lookup local 
32765:	from 213.156.3.162 lookup pine 
32766:	from all lookup main 
32767:	from all lookup default 

$ ip route ls
195.190.241.81 dev ppp0  proto kernel  scope link  src 194.109.252.152 
213.156.3.160/28 dev eth1  proto kernel  scope link  src 213.156.3.162 
10.0.0.0/24 dev eth0  proto kernel  scope link  src 10.0.0.150 
192.168.0.0/24 dev eth2  proto kernel  scope link  src 192.168.0.1 
default via 195.190.241.81 dev ppp0 

$ ip route ls table pine
default via 213.156.3.161 dev eth1 

This forces packets to go the right way.

Regards,

bert

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