Mailinglist Archive: opensuse-bugs (3335 mails)

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https://bugzilla.novell.com/show_bug.cgi?id=702304

https://bugzilla.novell.com/show_bug.cgi?id=702304#c3


Bernhard Wiedemann <bwiedemann@xxxxxxxxxx> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW
       InfoProvider|bwiedemann@xxxxxxxxxx       |

--- Comment #3 from Bernhard Wiedemann <bwiedemann@xxxxxxxxxx> 2011-06-30 
15:34:28 CEST ---
setting MTU 1280 did not help.

packets up to a certain size work, 
so I did send one byte too many with this:
ping6 -s 1233 www.novell.com

on my sixxs gateway I see in tcpdump:
15:25:18.539503 IP6 2001:6f8:11fc:f::1 > 2600:806:310::102: frag (0|1232)
ICMP6, echo request, seq 175, length 1232
15:25:18.539535 IP6 2001:6f8:11fc:f::1 > 2600:806:310::102: frag (1232|10)
15:25:19.261261 IP6 2600:806:310::102 > 2001:6f8:11fc:f::1: ICMP6, time
exceeded in-transit (reassembly), length 1240
15:25:19.550786 IP6 2001:6f8:11fc:f::1 > 2600:806:310::102: frag (0|1232)
ICMP6, echo request, seq 176, length 1232
15:25:19.550808 IP6 2001:6f8:11fc:f::1 > 2600:806:310::102: frag (1232|10)
15:25:20.261328 IP6 2600:806:310::102 > 2001:6f8:11fc:f::1: ICMP6, time
exceeded in-transit (reassembly), length 1240
15:25:20.566266 IP6 2001:6f8:11fc:f::1 > 2600:806:310::102: frag (0|1232)
ICMP6, echo request, seq 177, length 1232
15:25:20.566321 IP6 2001:6f8:11fc:f::1 > 2600:806:310::102: frag (1232|10)

so it would be a problem with fragmentation - possibly from ICMP6 packets being
dropped by some stupid firewall (as already happened with IPv4)

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