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[13:58] <niluje> I have a linux 3.17 (server A) and a linux 3.2.34 (server B) with a MTU of 9000 trying to contact a host with a MTU of 9001 through internet
[13:59] <niluje> I also have a Python script that tries to send a TCP packet larger than 1500 bytes
[13:59] <niluje> In both servers, net.ipv4.ip_no_pmtu_disc is set to 0
[14:00] <niluje> on server B, I receive a ICMP response "need to frag (mtu 1500)"
[14:00] <niluje> then, the packet is fragmented and resent: everything is fine
[14:00] <niluje> on server A, I receive the same ICMP response
[14:00] <niluje> but the kernel reemits the packet, unfragmented
[14:01] <niluje> (then I receive again an ICMP response, then the packet is reemited again, ...)
[14:02] <niluje> In the script that sends the TCP packet, I call getsockopt() to get the MTU value
[14:02] <niluje> on server A, it is 9000 (??), on server B 1500
[14:02] <niluje> on server A and B, tracepath finds a MTU of 1500 (which is correct)
[14:03] <niluje> any idea about what the problem might be? about what I can try?
[15:10] <henrix> cmagina: hi! any chances of having bug #1386261 for the utopic kernel?
[15:10] <ubot5> bug 1386261 in linux (Ubuntu) "xgene-pcie: Fix max payload size and phantom function configuration" [High,Confirmed] https://launchpad.net/bugs/1386261
[15:21] <cmagina> henrix: sure, marked it as verified. hadn't been getting a lot of runtime on utopic due to a kernel change that breaks the platform that fix is for
[15:21] <henrix> cmagina: awesome, thanks
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