kernel: in6_delayed_cksum: delayed m_pullup

[Alexander Zagrebin]

В Thu, 10 May 2018 16:56:38 +0200
"Dries Michiels" <driesm.michiels at gmail.com> пишет:

> I had updated the day after to see if it was just a regression but
> the error message was not gone: May  1 22:19:51 vados kernel:
> in6_delayed_cksum: delayed m_pullup, m->len: 48 plen 68 off 56
> csum_flags=400<CSUM_IP6_TCP> May  1 22:27:57 vados last message
> repeated 29 times May  1 22:36:53 vados last message repeated 17
> times May  1 22:49:41 vados last message repeated 6 times May  1
> 23:00:09 vados last message repeated 8 times May  1 23:01:06 vados
> last message repeated 7 times May  1 23:18:05 vados last message
> repeated 12 times For this reason I had disabled IPV6 for my LAN
> clients (disabled rtadvd). My server was still ipv6 reachable and
> error messages where gone.

I've observed such messages when ipv6 packets was passed via ipv4 NAT.
After changing ipfw rule from (for example)
nat 1 ip from any to me in via re1
to
nat 1 ipv4 from any to me in via re1
this messages has gone.
 
-- 
Alexander Zagrebin