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Re: FC1 -> FC2: very slow xDSL connection...



Dear Antonio,

as you may have seen in my last post (the one with several outputs and
log files), my MTU are the same as yours.

One output I didn't provide yet is that of "route -N". Nevertheless I
tried that command, as you suggested, but the result is just made up of
two lines, and I'm almost sure they are identical to the first and last
one of the output you provided. Previously, I saw several other lines, I
really don't know what happened to them...

Someone else suggested the problem was due to IPv6. I turned IPv6
support off, but nothing happened: everything works exactly as before
(or should I say, it doesn't work at all).

At last, I've got a sneaky suspicion that our good old friend Telecom
Italia has something to deal with this issue. Check the many lines in
the tcpdump output with "host x.x.x.x unreachable - admin prohibited
filter", and the others with "microsoft-ds". What do they mean? As
Telecom changed something so that I simply cannot access Alice this way?

I really don't know what else to try...

Best regards.

On Fri, 2004-06-25 at 11:11, antonio montagnani wrote:
> Andrea Giuliano wrote/ha scritto, On/il 25/06/2004 10:32:
> 
> >On Thu, 2004-06-24 at 19:31, Christoph Wickert wrote:
> >  
> >
> >>Am Do, den 24.06.2004 schrieb Andrea Giuliano um 15:11:
> >>    
> >>
> >>>Dear all,
> >>>
> >>>a few days ago I had my home ADSL connection working, and it was working
> >>>incredibly fast!
> >>>
> >>>Then I decided to upgrade from FC1 to FC2. Note that I've been using FC2
> >>>for some weeks here at work with very positive results.
> >>>
> >>>After the upgrade at home, the connection became so slow that it is
> >>>almost unusable. 
> >>>      
> >>>
> >>What exactly is slow: The transfer rate (e.g. when you download a big
> >>file from a fast server) or name resolution (getting the IP for a
> >>hostname)?
> >>    
> >>
> >When I activate the ppp interface, it takes much more time than with
> >FC1. When I had FC1 running, the log almost immediately showed the lines
> >with the local and remote IP addresses and DNS' addresses. Now, after
> >the line "ppp <- /dev/pts... " or whatever, it takes ten or more seconds
> >to see those addresses.
> >
> >After that moment, the connection itself is very slow. As I say in the
> >answer to Andy Green, some traceroute and ping command show that DNS is
> >not the issue here: name are resolved immediately. Traceroute starts
> >printing "*" after several lines which appears quite rapidly, and keeps
> >on this way for many many seconds, I never had that much patience to
> >wait for it to stop.
> >
> >  
> >
> >>I think you _may_ be hitting the problem with mozilla and IPV6, which is
> >>turned on by default in FC2. There has been some discussion about this
> >>last week on the list.
> >>    
> >>
> >
> >This sounds interesting. But how can I disable IPv6 to see if it's the
> >cause? Must I recompile the kernel, or have I just to echo something
> >somewhere in /proc?
> >
> >Many thanks.
> >
> >  
> >
> >>Christoph
> >>
> >>    
> >>
> Can you post the result of the output of the command:
>  /sbin/route -N
> 
> This is mine, please take inaccount that my machine is a router with two 
> ethernet cards (one to ADSL modem, one to internal network)
> 
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use 
> Iface
> 192.168.100.1   0.0.0.0         255.255.255.255 UH    0      0        0 ppp0
> 192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
> 192.168.254.0   0.0.0.0         255.255.255.0   U     0      0        0 eth1
> 169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth1
> 127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
> 0.0.0.0         192.168.100.1   0.0.0.0         UG    0      0        0 ppp0
> 
> Regards
> 
> -- 
> 
>  Antonio 
> 
>  =========================================================
>  Working with  Mozilla 1.7 on Redhat Linux Fedora Core 2
>  =========================================================
>  =========================================================
>      Uso Mozilla 1.7 su Redhat Linux Fedora Core 2
>  =========================================================
-- 
Andrea Giuliano, Ph. D.
ICCU - Istituto Centrale per il Catalogo Unico
Viale Castro Pretorio 105, Rome - ITALY
Tel. +39064989509, Fax +39064059302



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