Re: google path mtu?

2015-01-20 Thread Matthew Luckie
> It struck me that this should be possible to test on an > host. Basically if the host can just respond to a packet with PTB, > then checking if the size of the packets received changes or not > would be interesting. Is anyone aware of someone implementing this > already? Yes, the tbit tool does

Re: google path mtu?

2015-01-20 Thread Matthew Luckie
> No, the minimum MTU is a requirement on links, not hosts. Hosts are > always allowed to send smaller packets than the MTU if they want > to. Also, the MSS includes TCP options, so it might be 1208 on a > 1280-byte link. There are conflicting RFCs, but the consensus seems to be the MSS is compute

Re: google path mtu?

2015-01-20 Thread Marco d'Itri
On Jan 20, Mikael Abrahamsson wrote: > I turned off my IPv6 HE.net tunnel yesterday because family was complaining > about Youtube not working. I haven't enabled it again. Other people who had > problems, are things working again now? Yes for me (2a00:1450:400c:c04::93). -- ciao, Marco pgpkOQ

Re: google path mtu?

2015-01-20 Thread Mikael Abrahamsson
On Mon, 19 Jan 2015, Mikael Abrahamsson wrote: But regardless, I had trouble this morning with Youtube that might be related to the same issue. I turned off my IPv6 HE.net tunnel yesterday because family was complaining about Youtube not working. I haven't enabled it again. Other people who