gif does not work when going over IPv6 on current
Lars Schotte
lars at gustik.eu
Wed Aug 15 20:47:33 UTC 2018
Hey folks,
when you create a gif with IPv6 tunnel endpoints
tcpdump on the underlying interface will show you some kind of error
that 0 != 6 and packets will be dropped.
IP6 version error: 0 != 6
repeating for each packet.
happens only while sending. receiving works.
This happens only on 12-current as I am aware, 11-stable works good.
I worked around this issue by setting IPv4 tunnel endpoints.
And this issue is not related to what you transport. You can do IPv4 or
IPv6 ( proto 4 or proto 41 ) the issue remains the same.
With IPv4 tunnel endpoints ( inet tunnel ) it does dualstack w/o any
issues.
Strange. Isn't it?
--
Lars Schotte
Mudroňova 13
92101 Piešťany
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