is there any progress? just one "me too" this problem appeared for me when i try to use vlan over lagg ( to em NICs )
thanx kernel: vlan301: discard oversize frame (ether type 800 flags 3 len 1514 > max 1510) 2007/7/13, Chuck Swiger <[EMAIL PROTECTED]>:
On Jul 12, 2007, at 1:38 PM, Stephen Clark wrote: >> The MTU is actually defined in reference to a network segment such >> as an "ethernet collision domain", and applies to all machines >> sending traffic to that segment. If the MTU is really 1280, >> nobody else should be sending larger packets, and the drivers >> will drop any larger packets they receive and generate the >> appropriate ICMP error.... > > First thanks for responding but thats the problem, > this did't generate an icmp when the packet was dropped. > > kernel: rl0: discard oversize frame (ether type 800 flags 3 len > 1514 > max > 1294) > > This message did not result in any icmp packet. > > I was running tcpdump looking for them. Taking a quick look at ether_input() in src/sys/net/if_ethersubr.c suggests that you are right-- if the incoming packet exceeds the MTU being set, the input errors count for that interface is incremented, but no ICMP_UNREACH_NEEDFRAG is generated even if DF flag is set. You might file a PR and see whether you can get Andre or one of the other networking gurus interested in fixing this. Or maybe I'll give it a try myself if I can get some free time.... :-) -- -Chuck _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
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