On Wed, Apr 29, 2020 at 09:03:20AM +0200, free...@tango.lu wrote:
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?
from
https://en.wikipedia.org/wiki/Open_Shortest_Path_First
"https://en.wikipedia.org/wiki/Open_Shortest_Path_First*";
*
"Unlike other routing protocols, OSPF does not carry data via a
transport protocol, such as the User Datagram Protocol (UDP) or the
Transmission Control Protocol (TCP). Instead, OSPF forms IP datagrams
directly, packaging them using protocol number 89 for the IP Protocol
field."
in other words, OSPF is not UDP or TCP based and hence will not easily
work over routed tunnels - which makes sense, as OSPF is a rout*ING
*protocol, not a rout*ED* protocol.
Having said that, lots of people have posted info on how to set up OSPF
over a tun-based openvpn setup. e.g
https://forum.netgate.com/topic/117806/solved-running-ospf-on-tun-openvpn
HTH,
JJK
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