Re: [Openvpn-users] Answering on the same interface where the request came from

[Christian <chr...@ce...>]

On Monday 21 February 2005 16:49, Vincent Bernat wrote:
> Hello !
>
> I  have a  box with  two Internet  connections and  I have  an OpenVPN
> listening to  all interfaces.  I  have a default  route to one  of the
> connections and  I use iproute2 to  ensure that what is  sent with the
> address  of  the  second  connection  is really  sent  to  the  second
> connection :
>
> 200:	from 82.67.232.xxx lookup ADSL
>
> And in table ADSL :
>
> default via 82.67.232.254 dev eth2
>
> Therefore, when I connect through ssh to 82.67.232.xxx, all is working
> fine, even if the default route uses another IP. ICMP and UDP are also
> working  fine  (I   don't  know  the  magic  behind   since  they  are
> connection-less).    However,   with   OpenVPN,   if  I   connect   to
> 82.67.232.xxx, OpenVPN always answers with the other IP and therefore,
> the answer is sent via the default interface.
>
> I use OpenVPN 2.0rc12 (from Debian). Any idea ?

Assuming that iproute2 setup is working correctly, try running 
two openvpn servers and bind each server (local parameter in
openvpn server configuration) to the ip address for each
internet connection.

Actually, when using TCP as openvpn carrier this should not necessary, 
but when using UDP as carrier I have found that I had to use two openvpn 
servers (one for each line) bound to the apropriate ip address to
get traffic to return out the corresponding line.

Christian