[fpc-pascal] 64 bits

constantijnw cw.s at xs4all.nl
Mon Mar 20 22:15:27 CET 2006


Johann Glaser wrote:

>Hi!
>
>  
>
>>It is known that some people have a problem accessing  
>>www.freepascal.org, but unfortunately no one knows the exact cause.  
>>Some people think a certain kind of icmp packets are filtered by the  
>>firewall in front of the machine that hosts www.freepascal.org  
>>(something with fragmenting packets) and that this causes the problem.
>>    
>>
>
>Just as an idea: Did you think of ECN problems (Explicit Congestion
>Negotiation, RFC 3168 http://www.rfc-editor.org/rfc/rfc3168.txt)? The
>http://www.kernel.org/ site has a news entry (16.1.2002), which says:
>--- schnipp ---
>Please note that kernel.org uses Explicit Congestion Notification (ECN),
>as defined in RFC 3168. Some broken firewalls or gateways may have
>problem connecting to ECN-enabled servers. Please contact your firewall
>or gateway vendor for necessary updates.
>--- schnapp ---
>So possibly a broken router which doesn't like the ECN bits in the IP
>header is the cause of the problems. 
>
>You can disable sending packets which use ECN on your Linux box by
>  echo "0" > /proc/sys/net/ipv4/tcp_ecn
>  
>
Thanks. I'm on win xp behind a draytek vigor 2200 router, firmware 
v.2.3.6. Anyone who knows
how to configure this thing so this problem is solved?



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