[CentOS] Centos 7 as gateway - UDP performance is busted/awful?
Tom Horsley
horsley1953 at gmail.comThu Aug 14 18:19:00 UTC 2014
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> If you look inside the ICMP packet in wireshark, it will tell you > who sent it and what MTU they said was acceptable. Well, I'm definitely drowning in network confusion here :-). Everyone's MTU is the default 1500, I checked all systems in the path. The wireshark display says 1516 in the Length column for the NFS packet that always shows up before the ICMP errors. If I expand the "IP V4" line in the packet, it says "Total Length: 1500" for that READDIRPLUS Reply which says 1516 for the capture length. It also has the "Don't fragment" flag set. It looks like the 16 byte extra is confusing it, but I have no idea why that is different than the IPv4 length info.
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