* regression kernel 4.4: stops routing packets with a GRE-payload
@ 2016-01-20 14:00 Wolfgang Walter
2016-01-20 16:58 ` Nicolas Dichtel
0 siblings, 1 reply; 3+ messages in thread
From: Wolfgang Walter @ 2016-01-20 14:00 UTC (permalink / raw)
To: netdev
Hello,
we tried 4.4 on our routers. We found one problem: 4.4 stops routing GRE
packets (ipv4 in GRE/ipv4) here. 4.4.15 works fine.
Neither GRE-endpoint is on the router:
gre-endpoint A <== internet ===> (eth0)router(eth1) <== network ==> gre-
endpoint B
eth0 and eth1 are intel network-cards (I350).
I see GRE-packets arriving both at eth0 and eth1.
GRE-packets from eth0 are not forwarded to eth1 (that means: I can't see them
with tcpdump on eth1 nor on endpoint B). Packtes with an TCP or UDP payload
are forwarded.
Some GRE-packets from eth1 are forwarded to eth0 but most just seem to
disappear.
On the gre-endpoint B (same hardware) which is also a linux router kernel 4.4
works. So this seems to be a problem when forwarding ipv4-packets with a GRE-
payload.
Regards,
--
Wolfgang Walter
Studentenwerk München
Anstalt des öffentlichen Rechts
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: regression kernel 4.4: stops routing packets with a GRE-payload
2016-01-20 14:00 regression kernel 4.4: stops routing packets with a GRE-payload Wolfgang Walter
@ 2016-01-20 16:58 ` Nicolas Dichtel
2016-01-20 18:11 ` Wolfgang Walter
0 siblings, 1 reply; 3+ messages in thread
From: Nicolas Dichtel @ 2016-01-20 16:58 UTC (permalink / raw)
To: Wolfgang Walter, netdev
Le 20/01/2016 15:00, Wolfgang Walter a écrit :
> Hello,
>
> we tried 4.4 on our routers. We found one problem: 4.4 stops routing GRE
> packets (ipv4 in GRE/ipv4) here. 4.4.15 works fine.
4.4.15 does not exist. Is it 4.1.15?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: regression kernel 4.4: stops routing packets with a GRE-payload
2016-01-20 16:58 ` Nicolas Dichtel
@ 2016-01-20 18:11 ` Wolfgang Walter
0 siblings, 0 replies; 3+ messages in thread
From: Wolfgang Walter @ 2016-01-20 18:11 UTC (permalink / raw)
To: nicolas.dichtel; +Cc: netdev
Am Mittwoch, 20. Januar 2016, 17:58:52 schrieb Nicolas Dichtel:
> Le 20/01/2016 15:00, Wolfgang Walter a écrit :
> > Hello,
> >
> > we tried 4.4 on our routers. We found one problem: 4.4 stops routing GRE
> > packets (ipv4 in GRE/ipv4) here. 4.4.15 works fine.
>
> 4.4.15 does not exist. Is it 4.1.15?
Yes, I mean 4.1.15
--
Wolfgang Walter
Studentenwerk München
Anstalt des öffentlichen Rechts
^ permalink raw reply [flat|nested] 3+ messages in thread
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2016-01-20 14:00 regression kernel 4.4: stops routing packets with a GRE-payload Wolfgang Walter
2016-01-20 16:58 ` Nicolas Dichtel
2016-01-20 18:11 ` Wolfgang Walter
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