Thanks for the answer. How many classes can HTB take? I use 4-6 interfaces / computer and 2 pools / interface which is has 62 addresses each. So there would be about 512 classes if I make one for each address. > I think this came from some mails of about 6 or 8 months ago on the LARTC > list, no? I recognize the content.... Yes. I did get it to work in one direction. =) And iptables -j mark in the other direction. But your idea of one class / ip is something I'm thinking of to make now. So I don't need to fill in the MAC or IP when a new client comes to town. I'm also having a problem with DHCP that it won't put "known" members in the right pool, but maybe ask that in the dhcp maillist. // Joachim