[Openswan Users] Two or more interfaces found, checking IP forwarding [FAILED]

[Paul Wouters]

On Fri, 11 Sep 2009, Nick Howitt wrote:

> I have just upgraded to 2.6.23 and run ipsec verify and I get an
> unexpected error:
> Two or more interfaces found, checking IP forwarding            [FAILED]
>
> cat /proc/sys/net/ipv4/ip_forward gives 1 so I am confused.
>
> If it helps eth0 is my WAN, eth1 is my normal LAN, eth1:0 is a virtual
> IP on eth1 to get round a problem I have been having with running
> Openswan on a combined gateway/file server, and eth2 is a second, unused
> LAN adaptor.

Then you can ignore it. It's a warning when running a subnet-subnet or
subnet-host tunnel on the subnet side, where you need forwarding to go
from the public side (internet) to the lan.

Paul