On Sat, Oct 07, 2006 at 11:04:44PM +0100, Mark Rogers wrote:
Explain that! Snide comments about W2k vs Linux I can come up with myself! I need to bring a Linux box back home to try, but when I've sent this email I'll reboot this PC with a LiveCD and see whether that's better.
Perhaps the W2k box is setting a DNF (do not fragment) or something so the router is just dropping the packet? Was that ping running over the vpn?
Nope, you shouldn't need to adjust the PC settings at all, the router should do the fragmentation (although, what routers are you using, I find it strange that you've found something with an "odd" default?
I'm sure 1500 is a very common default! Which routers have you found with defaults of 1458?
Anything Netgear, Speedtouch USB modems all seem to default to 1458 with Windows, a couple of brands I forget but I think possibly Dlink, Dynamode and 3com. It would be quite easy I guess given how many consumer routers are out there to find plenty that are set to 1500 by default.
Of-course I have to be open to the possibility that the problems at home and at work have completely different causes, even if the symptoms are similar.
Very possibly, try perhaps using ping and setting do not fragment bits and see what happens. I don't really have too much recent experience of fiddling lots with the innards of tcp/ip so i'm a bit out of ideas for now. I'll try re-reading the thread when I feel less ill perhaps.
Adam