Well I've been using ispconfig (set up according to the 'perfect setup') on my two debian etch servers for a while now, and everything's been perfect. That is, until now, when my ISP decided to introduce a new system, according to which it becomes obligatory to use the dhcp server of the ISP. So, now I won't be able to simply type my external IPs (I have 10 external IPs on each server) in /etc/network/interfaces - I have to use dhcp! The ISP tells me that if I keep the manual configuration, I won't have any Internet - they call this "dhcp snooping", when connection is blocked if the request is made directly and not via dhcp. My ISP also says that in order to keep all my external IP addresses I need to make my network card broadcast different physical addresses - so let's say I want ten external IPs, so my single network card must broadcast 10 different physical addresses (mac addresses) - so that the ISP's dhcp server will know which IP should be assigned to which address. So my two questions are: 1) Is it possible to configure ispconfig to work with dhcp server? If yes, how? 2) How can I make my single network card broadcast several different physical addresses (mac addresses)? As always, your help is much appreciated.