On Thu, Feb 17, 2005 at 12:51:06PM +0100, Jean-Pierre HOFER wrote:
> Fetching distfiles with ftp on a host sitting behind a NAT gateway (with
> builtin ftp proxy) is working fine from most file servers on the Net.
> 
> But with a few remote servers, ftp is stopping after login and cd in the
> remote file server :  no data is received, the progress bar is showing 0%
> and there is apparently no timeout to the stopped transfer.
> On the other hand, fetching the same distiles from the same remote servers
> on a host that is directly connected to the Internet (i.e. without NAT and
> builtin ftp proxy) is always working fine.
> 
> Is this problem related to the NAT or to the builtin ftp proxy ?
> Is there a workaround ? (especially related to the use of pkgsrc)

It may be a MTU-related problem. Are you behind a pppoe interface ?
Are you using mss clamping or some other config to reduce the TCP MSS ?

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--