Here is part of the dmesg:
[root@localhost /root]# dmesg | grep -i eth
[ 119.196375] Broadcom NetXtreme II Gigabit Ethernet Driver bnx2
v1.5.8.1 (May 7, 2007)
[ 119.215023] eth0: Broadcom NetXtreme II BCM5708 1000Base-T (B2) PCI-X
64-bit 133MHz found at mem f8000000, IRQ 17, node addr 0019b9c8eedc
[ 119.246853] eth1: Broadcom NetXtreme II BCM5708 1000Base-T (B2) PCI-X
64-bit 133MHz found at mem f4000000, IRQ 16, node addr 0019b9c8eede
[ 119.458598] e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network
Connection
[ 119.654095] e1000: eth1: e1000_probe: Intel(R) PRO/1000 Network
Connection
[ 266.513144] bnx2: eth3: using MSI
[ 269.638237] bnx2: eth3 NIC Link is Up, 1000 Mbps full duplex, receive
& transmit flow control ON
[ 290.242533] eth3: no IPv6 routers present
As you can notice it tried to use eth0 & eth1 for both broadcom adapters
but it did not worked properly since e1000 used them instead and finally
bnx2 got eth3 working using MSI ?