On 18 May 2000, Miquel van Smoorenburg wrote:
> Sounds like Path MTU discovery problems. Did you enable
> /proc/sys/net/ipv4/ip_always_defrag on the NAT/masq host ?
It was set to 3, then 2, then.. [grin] As I can see in ip_masq.c this is
used as some sort of counter that is incremented automatically during
masquerading. So either this isn't working or it isn't the problem. (I'm
running 2.2.15; I understand this changed recently, we used to have a
kernel option, no?)
> If that isnt' the problem some in-between gateway or router might be
> filtering ICMP packets. I've heard that even hotmail did/does this
> on their firewall, which is a bad, bad idea. See
> http://www.worldgate.com/~marcs/mtu/
Thanks a million for the link. I was dying to figure it out; why should a
HEAD come and a GET not? [smile]
> If that is the case, turning off path mtu discovery on the client
> is the only solution (through /proc/sys/net/ipv4/ip_no_pmtu_disc)
Didn't fix it either, strangely. I bumped up mtu/mru to 1500 for pppd and
all is well now.
Cheers,
--
/\ Christian Reis exists solely to answer [EMAIL PROTECTED]
\'`/ Async Free SW Development | http://async.com.br | +55 16 274 2497
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