help with OpenVPN bridge between routers

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someotherguy
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Joined: 29 Jan 2013
Posts: 1

PostPosted: Tue Jan 29, 2013 1:20    Post subject: help with OpenVPN bridge between routers Reply with quote
I'm running DD-WRT on two different routers. They are in physically distant sites, and I'm using OpenVPN on the routers to bridge the two, separate networks. The bridging works quite well, except for one problem.

One of my two routers connects to a fairly fast cable-modem internet connection. It's at 172.16.1.1, and provides DHCP, DNS, and NAT for several computers on that local network, in the 172.16.1.1-127 range.

The other uses a satellite ISP, so it's very slow. It's at 172.16.1.128, and provides DHCP, DNS, and NAT for several computers on that local network, in the 172.16.1.128-255 range.

For some reason DHCP clients on my "fast" network get a default gateway of the "slow" router, when the OpenVPN bridge is running. This, of course, causes all sorts of problems.

Any suggestions on the best way to ensure that computers at each site use the "local" default router, but are still able to reach computers on the other side of the bridge?
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Sash
DD-WRT Guru


Joined: 20 Sep 2006
Posts: 17619
Location: Hesse/Germany

PostPosted: Tue Jan 29, 2013 18:16    Post subject: Reply with quote
use tun or block dhpc across the tunnel
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