In message <CAL9jLaZMV9yo7Yzsydcj7U0o+DjHACEJ7z0ypN_00f+iM=j...@mail.gmail.com>, Christopher Morrow writes: > On Tue, Dec 18, 2012 at 3:35 PM, Owen DeLong <o...@delong.com> wrote: > > > > On Dec 18, 2012, at 12:22 , Christopher Morrow <morrowc.li...@gmail.com> > > wrote: > > > >> On Tue, Dec 18, 2012 at 3:19 PM, Mark Andrews <ma...@isc.org> wrote: > >>> > >>> In message > >>> <cal9jlabwe_e+vfzwybtbrp50eicbvq7z3xuq3qwf3fhmidl...@mail.gmail.com>, > >>> Christopher Morrow > >>> writes: > >>>> On Tue, Dec 18, 2012 at 11:15 AM, Darren Pilgrim <na...@bitfreak.org> > >>>> wrote: > >>>>> 4890 > >>>> > >>>> it might not be their (eftps.gov's) fault though... but sure. > >>> > >>> If you run a server you should be expecting PTB for both IPv4 and > >>> IPv6. If you have broken equipement in front of the server you can > >>> set IPV6_USE_MIN_MTU to 1 on IPv6 sockets. There is no excuse to > >>> have connections broken due to PMTUD. > >> > >> sure there is! "my isp filters icmp" > > > > Get a better ISP. > > both of you crack me up.
Setting IPV6_USE_MIN_MTU on a IPv6 socket is a couple of lines of code in the http server. Been there, done that. If you can't do that then set the interface MTU to 1280. I repeat there is no excuse to have connection broken due to PMTU issues. A compentent sys admin can work around upstream problems. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org
