Cannot connect two ospf-instances over tun-interface

[Ondrej Zajicek]

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)
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"To err is human -- to blame it on a computer is even more so."