Re: [swinog] SBB.ch / IPv6 MTU / fragmentation problem

2019-04-01 Diskussionsfäden Oliver Schad
On Wed, 13 Mar 2019 08:33:51 + Müller Urs (IT-OM-SDP-SDN) wrote: > Yesterday, I was contacted by Silvia (and others) about that task. I > was then not registered with that list. @Silvia: Great! Thanks for quick response, Urs. > We were struggling with convincing the management to fund

Re: [swinog] SBB.ch / IPv6 MTU / fragmentation problem

2019-03-13 Diskussionsfäden IT-OM-SDP-SDN
ists.swinog.ch Betreff: Re: [swinog] SBB.ch / IPv6 MTU / fragmentation problem Hey Silvia, thanks a lot for the insight! I did not expect this answer when asking this morning. I am currently doing my master thesis [0] about IPv6 in fully programmable P4 switches (my hardware platform will be B

Re: [swinog] SBB.ch / IPv6 MTU / fragmentation problem

2019-03-12 Diskussionsfäden Nico Schottelius
Hey Silvia, thanks a lot for the insight! I did not expect this answer when asking this morning. I am currently doing my master thesis [0] about IPv6 in fully programmable P4 switches (my hardware platform will be Barefoot Tofino in the end) - I assume this might be rather interesting for SBB,

Re: [swinog] SBB.ch / IPv6 MTU / fragmentation problem

2019-03-12 Diskussionsfäden Jeroen Massar
So instead of waiting for all that and never fixing a known issue: They could just take a little Linux box with nginx (which is F5 now ... funnily), assign the IPv6 address to that and proxy with that. Voila. Solved. No need to have a load balancer for that as I doubt that sbb.ch gets more

Re: [swinog] SBB.ch / IPv6 MTU / fragmentation problem

2019-03-12 Diskussionsfäden Silvia Hagen
Hi guys Here's some info from SBB (I was working with them and just spoke with them today). . They are aware of the problem. . The problem only happens when someone uses smaller packet sizes (often when using some tunnelling techniques). . Currently the webserver is in an IPv4 zone, the

Re: [swinog] SBB.ch / IPv6 MTU / fragmentation problem

2019-03-12 Diskussionsfäden Jeroen Massar
On 2019-03-12 11:17, Alarig Le Lay wrote: > Hi, > > I’m not from sbb, but it seems to work from here: try a tracepath6, you likely have a 1500 MTUand yeah then it "works", not when PtB gets involved though. ICMPv6 (and other packets, 40% on one hop), are obviously being dropped... Greets,

Re: [swinog] SBB.ch / IPv6 MTU / fragmentation problem

2019-03-12 Diskussionsfäden Alarig Le Lay
Hi, I’m not from sbb, but it seems to work from here: 11:12 alarig@mew ~ % wget -O /dev/null https://sbb.ch/ --2019-03-12 11:12:50-- https://sbb.ch/ Résolution de sbb.ch (sbb.ch)… 2a00:4bc0::::c296:f58e, 194.150.245.142 Connexion à sbb.ch (sbb.ch)|2a00:4bc0::::c296:f58e|:443…

Re: [swinog] SBB.ch / IPv6 MTU / fragmentation problem

2019-03-12 Diskussionsfäden Jeroen Massar
On 2019-03-12 10:32, Nico Schottelius wrote: > > Good morning, > > is anyone from sbb.ch reading here? > > https://sbb.ch does not load on IPv6 for us. > It seems that packets > 1420 bytes are dropped inside the SBB network, > > Local PMTU / fragmentation seems to work, my local outgoing > MTU