boot parameter interface=auto can't adaptation the correct NIC

[Qin Bo <kinboster@gmail.com>]

hi all:
       I use squeeze Nov 6 build iso to install, i had three network interface card, a onboard NIC and two stand alone NIC is intel e1000, 
       and e1000 1st(eth1) is plug a cable, e1000 2nd(eth2) and onboard(eth0) is not, i want to auto configure the NIC which plug cable (at this is e1000 1st, eth1), 
      so i write interface=auto as boot parameter, but when get ip from dhcp server, the installation can't get ip. when i configure network manually, 
      found the ip configure onboard NIC, that is say the ip is configure on eth0 not eth1. any idea? Or may be is a bug? If i want to auto configure the NIC which plug cable, how to? 


best regards

Qin Bo