In message <CAL9jLaZMV9yo7Yzsydcj7U0o+DjHACEJ7z0ypN_00f+iM=JYuw@mail.gmail.com>, Christopher Morrow writes:
On Tue, Dec 18, 2012 at 3:35 PM, Owen DeLong <owen@delong.com> wrote:
On Dec 18, 2012, at 12:22 , Christopher Morrow <morrowc.lists@gmail.com> wrote:
On Tue, Dec 18, 2012 at 3:19 PM, Mark Andrews <marka@isc.org> wrote:
In message <CAL9jLabwE_e+VfzwYBTbrP50EicBvQ7z3XUQ3qwf3FHMiDLS0g@mail.gmail.com>, Christopher Morrow writes:
On Tue, Dec 18, 2012 at 11:15 AM, Darren Pilgrim <nanog@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: marka@isc.org