In message <2CF4CB03E2AA464BA0982EC92A02CE2509F878B0@BY2PRD0512MB653.namprd05.p rod.outlook.com>, Ronald Bonica writes: > Hi Mark, > > Thanks for this good empirical data! > > I would like to verify your assertion that most of the IPv6 fragment carry > UDP. Do you have any way to be sure?
I've looked at packet traces in the past and the fragmented traffic is UDP. The box is running a validating recursive nameserver which advertises a 4096 byte EDNS UDP buffer. It draws in fragmented traffic. I can tell when there are out of order IPv4 fragments as the NAT in front of it doesn't handle the case where the first fragment received is not the initial fragment. Whether you see fragmented traffic is very dependent upon what you are doing, how things are configured and what the application layer has learnt about the network characteristics. There is a lot of potential fragmented traffic out there. Mark > Ron -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
