Hi, I'm trying to 'fake' multiple phisical adapters in my FreeBSD 6.1-PRERELEASE system, but I'm not getting anywhere.
-There are two 3Com 905C cards in the system (xl0 and xl1). -xl1 is assigned a static private IP address and xl0 aquires an address from my provider using DHCP. -The system does NAT for several clients having private addresses. I need to 'clone' the xl1 adapter to appear as three adapters, each with a distinct MAC address. This because my provider has assigned me three semi-static addresses of which I want to use 1 for outbound NAT-traffic and two for static NAT. These addresses are semi-static because they are basically MAC-based reservations on the providers DHCP server, and it happens to be that I'm required to aquire a DHCP lease for all three addresses for routing to work properly. If I configure the addresses statically the connectivity 'disappears' after a while. I tried using netgraph as suggested here: http://ezine.daemonnews.org/200406/netgraph.html ifconfig xl1 delete ngctl mkpeer . eiface hook ether ifconfig ngeth0 up ngctl mkpeer ngeth0: bridge lower link0 ngctl name ngeth0:lower mybridge ngctl connect xl1: mybridge: lower link1 ngctl connect xl1: mybridge: upper link2 ngctl connect ngeth0: mybridge: upper link3 ngctl msg xl1: setautosrc 0 ngctl msg xl1: setpromisc 1 ifconfig ngeth0 link 00:50:04:32:8a:6b At this point everything seems OK, the MAC-address is correctly set and xl1 is in promiscous mode. However, when I try 'dhclient ngeth0' the adapter does not get any response/lease. I also tried using a vlan interface as following: ifconfig vlan create ngctl msg xl1: setautosrc 0 ifconfig vlan0 vlan 0 vlandev xl1 ifconfig vlan0 link 00:50:04:32:8a:6b The same here, 'dhclient vlan0' fails. I also thought that it'd be much simpler to have a dhcp client that I could instruct to spoof the MAC-addresses so that it would aquire leases for 3 distinct mac-addresses, and run as a daemon so that it renews them when they expire. I could then just configure the addresses statically and don't have to clone any adapters. However, I haven't found any client that could do this... At the moment I'm out of ideas and I was hoping that someone here could point me in the right direction with this problem. -- Regards, Terrence Koeman MediaMonks B.V. (www.mediamonks.com) Please quote all replies in correspondence.
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