Ok so after a bit of research and finding half baked articles such as:
https://superuser.com/questions/1283125/proper-configuration-for-quagga-ospf-on-an-openvpn-network
Which makes me think OSPF is only possible with the old tap interfaces,
what the OpenVPN dev team even want to remove in the future, why is
there no proper support of OSPF in routed tun tunnels?
Is there no demand of using routing protocols inside VPN tunnels? Any
plans for the future to have something like quagga built into OpenVPN to
take care of this?
My setup would be something common:
3 locations
A 10.0.1.0/24
B 10.0.2.0/24
C 10.0.3.0/24
With point to point tunnels between all 3 locations with OpenVPN in
routed mode.
The tunnels use different p2p ips like:
A->B 192.168.1.1 192.168.1.2
B->C 192.168.1.3 192.168.1.4
A->C 192.168.1.5 192.168.1.6
So manually for example for hosts on A to reach computers on B you would
add a route like:
route add -net 10.0.2.0/24 gw 192.168.1.2
However with these static routes if the connection goes down between A
and B and both A and C and B and C is up it will not be rerouted on the
other path. This is where OSPF would be useful.
I wonder how others deal with these kind of setups?
Thanks
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