Hello Friends,

I have connected 2 DSL lines in my linux box with two different Ethernet card. In my ifcfg-ppp0 , ifcfg-ppp1 config files having DEFROUTE=yes. ip route added automatically when i brought up the interface ppp0 it is updated like

default dev ppp0 scope link

and brought up the interface ppp1 it is updated like

default dev ppp1 scope link

But this route is automatically removed when i brought down ppp0 interface when ppp1 interface still up and running.

Do i need to change any configuration to route can be removed only on the particular interface is down?

Regards

Anyone faced the same issue?

Adding more details.

I have two interface ppp0 ppp1. When we run ifdown ppp0 then it is flush all the default routes with ppp1 route as well. I did not see any issue lower version of CentOS-5.9.

Is there any bug reported or am i missing some configuration or is there any way to disable the delete routes when we run ifdown command?

Nobody facing the ifdown command flush all the routes issue?

Depends on the distribution. Fedora has been moving things around for instance, and routes can occur in at least two places - the /etc/sysconfig/network-scripts/ifcfg files, and in /etc/sysconfig/network. Before my VM would work correctly, I had to put the designated gateway in the in network file (along with the DNS info).

Previously, the entries for DEFROUTE=yes, PEERDNS=yes, and PEERROUTES=yes would have set the routing properly.

Not any more.

Can we stop flushing by any code change or any comment our some parameter?

The flushing is done by downing the interface. When the routes are in /etc/sysconfig/networks they shouldn't be removed. Just be sure they are not in the ifcfg files.

The only other way is to not use fedora and use a more controllable distribution.

I am using CentOS-5.9 operating system. Do we have any issue on CentOS-5.9 for my use case?

I wouldn't think so.

I don't have a CentOS 5.9 system currently available to check though, Mine went to CentOS 7 for testing which did show the problem.