Cannot connect two ospf-instances over tun-interface

[dawid k]

Therefore I tried running ospf in broadcast mode as well, but then it
changed automatically:

<WARN> myOSPF3: Cannot use interface tun0 as broadcast, forcing ptp

I tried the tap-Interface and it's working (or at least the neighbours were
detected) but as said, my system has to use tun and I cannot change it. So
there is propably no solution for such settings. I will try bgp instead.
Thank you for your help.

2018-04-03 16:18 GMT+02:00 Ondrej Zajicek <santiago at crfreenet.org>:

> On Tue, Apr 03, 2018 at 08:05:41AM -0600, Michael McConnell wrote:
> > OpenVPN won’t do multicast over TUN, only TAP.
>
> Well, that would be silly from OpenVPN. But tcpdump output from Dawid K
> shows that multicast packets are propagated throught TUN:
>
> > 06:59:00.439738 IP (tos 0xc0, ttl 1, id 15270, offset 0, flags [none],
> proto OSPF (89), length 64)
> >     server > 224.0.0.5: OSPFv2, Hello, length 44
> >         Router-ID repo.traffic.local, Backbone Area, Authentication
> Type: none (0)
> >         Options [External]
> >           Hello Timer 10s, Dead Timer 40s, Mask 0.0.0.0, Priority 1
> > 06:59:02.449363 IP (tos 0xc0, ttl 1, id 18875, offset 0, flags [none],
> proto OSPF (89), length 64)
> >     10.29.0.6 > 224.0.0.5: OSPFv2, Hello, length 44
> >         Router-ID 192.168.21.17, Backbone Area, Authentication Type:
> none (0)
> >         Options [External]
> >           Hello Timer 10s, Dead Timer 40s, Mask 0.0.0.0, Priority 1
>
> --
> Elen sila lumenn' omentielvo
>
> Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
> OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
> "To err is human -- to blame it on a computer is even more so."
>
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