Hello Devik! Thanks for your help. And many thanks to everybody from the group who has been thinking on my problem. It seems i resolved my problem - there is no connection loss while reseting htb, but I'll be observing it's stability in a few days. I have no words to write what a STUPID mistake it was. As i suposed it was conected with packet marking. I've been using this command to mark packets: iptables -t mangle -A MYSHAPER-OUT -p tcp -s 192.168.0.2 -j MARK --set-mark $mark BUT when configuring tcng i looked at my marking script "what the heck??, Internet is not only tcp! Isn't it?" I removed "-p tcp" and now it works. Yes it was really BAD and took me too much time ggrrrrrrr. Good luck folks. _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/