Hello i have a server with 2 NICs onboard and 1 board with 2 NICs pci.
bge0 = WAN
bge1 = LAN1
em0 = LAN2
em1= nothing.
all work fine, but... when i shutdown pc connected in ethernet LAN2... LAN1 cant navigate internet. :o
if pc connected in ethernet LAN2 is power on... LAN1 can navigate.
What is your LAN1 Gateway configuration ? It must be "auto detect" or fixed to Wan.
Solved
Navigate to System > Settings > Tunables
Locate net.link.bridge.pfil_member and change its setting from Default to 0. Save and Apply Changes
Locate(directly below the previous setting) net.link.bridge.pfil_bridge and change the setting from Default to 1. Save and Apply Changes