RE: really weird NAT (?) problem

["Nellis, Nick" <Nick.Nellis@uk.thalesgroup.com>]

have you tried this with any other sites?
what are you ipnat rules?

-----Original Message-----
From: supc [mailto:supc@bsdaemon.be]
Sent: 01 November 2001 12:20
To: misc@openbsd.org
Subject: really weird NAT (?) problem


Hello,

since yesterday I have been playing with OpenBSD 3.0 as a gateway
to connect my local LAN to the internet (ADSL, PPPoE connection).
It seems to work OK most of the time.

*BUT* when I try to access http://www.NetBSD.org/ using one of
the machines on the LAN (client machines) running FreeBSD
or Linux, the http connection is very slow and eventually
times out (lynx just says
"HTTP request sent; waiting for response" and it seems to
stay like that forever, Netscape gives a timeout error message).

When the client machine is running Windows (9x or 2k),
this problem does NOT occur.

It happens with ftp://ftp.netbsd.org too:

%ftp ftp.netbsd.org
ftp: connect to address 3ffe:8050:201:1860:2a0:c9ff:feed:b7ea: No route
to host
Trying 204.152.184.75...
Connected to ftp.netbsd.org.
220 ftp.netbsd.org FTP server (NetBSD-ftpd 20010417) ready.
Name (ftp.netbsd.org:supc): ftp
331 Guest login ok, type your name as password.
Password:
230-
(and here it stays like that)
On the gateway itself this works without problems.
I can log in to other FTP sites from the client machines just fine.


(most) Other web sites work just fine.  Visiting
www.netbsd.org on the gateway itself (using lynx) works, too.

I don't understand this problem.  Maybe there's something
about the netbsd.org site (but *what* ?) that the OpenBSD
gateway doesn't handle correctly, but a client machine
running windows can browse it ... very weird  ...

Does anyone have an idea about this?