[LARTC] MSN messenger 6 keeps disconnecting after a few minutes

[LARTC] MSN messenger 6 keeps disconnecting after a few minutes

[GoMi]

 
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Hi there, i actually already told you about this problem, but i cant find a way to solve it. Let me explain my self again:

- -I have 2 dsl connections, so i do load balacing.

- -My QoS setup is based on htb on both ethernets:

  iptables -t mangle -N msn
    iptables -t mangle -A msn -m string --string 'x-msn' -j MARK --set-mark 2
    iptables -t mangle -A msn -m string --string 'MSNMSGR' -j MARK --set-mark 2
    iptables -t mangle -A msn -m string --string 'Content-Type: text/x-msmsgscontrol.' -j MARK --set-mark 2
    iptables -t mangle -A msn -m string --string '@hotmail.com' -j MARK --set-mark 2
    iptables -t mangle -A msn -m string --string 'MSG' -j MARK --set-mark 2
  iptables -t mangle -A msn -j RETURN

   iptables -t mangle -A POSTROUTING -j CONNMARK --restore-mark
    iptables -t mangle -A POSTROUTING -m mark --mark 0 -j msn
   iptables -t mangle -A POSTROUTING -j CONNMARK --save-mark

 That goes trough a filter to the attachech qdisc.

When my users begin to use msn messenger, after a while (5 minutes or so) the program automatically disconnects. 

This is worse depending on the hour of the day, and hence depending on the amount of users on my network. 
I have an average of 60 users during noon time, and an average of 25 during daytime.

When 60 users are accesing the net through this QoS, the problem gets really bad. I thought that might be because the box was only running with 64Mb  RAM and could not handle many tcp connections at once, and so i added another 128 so the number of tcp_max_conntrack connections went from 6000 to 12000. But it made no difference. Does anybody has any idea. Or how could i investigate this?

Is it maybe because linux thinks the connection is lost and hence closes down the socket? Anybody? Thank you!!

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