Re: IPv6 patch mysteriously breaks IPv4 VPN

Hannes Frederic Sowa
2016-04-21T08:08:09Z

On 21.04.2016 04:24, Valdis Kletnieks wrote:
> I'll say up front - no, I do *not* have a clue why this commit causes this
> problem - it makes exactly zero fsking sense.
>
> Scenario: $WORK is blessed with a Juniper VPN system. I've been
> seeing for a while now (since Dec-ish) an issue where at startup,
> the tun0 device will get wedged. ifconfig reports this:
>
> tun0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1400
> inet 172.27.1.165 netmask 255.255.255.255 destination 172.27.1.165
> inet6 fe80::6802:d95c:f3f4:2a6f prefixlen 64 scopeid 0x20
> unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC)
> RX packets 0 bytes 0 (0.0 B)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 1 bytes 48 (48.0 B)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

Can you show us a ip -d l l ?

Thanks,
Hannes