I have my current pfsense setup as:
On-board:

• em0: wan
• igb4: management vlan

PCIe nic adapter:

• igb0: interface with 2 vlans
• igb1: interface with 5 vlans
• igb2: directly connected interface to surveillance
• igb3: empty

I'm changing the 4 ports igb nic to a 2 ports ixl nic

I plan to first assign my igb1 vlans to the same interface on igb0
Then optionally assign igb2 interface to igb1

Then boot up after swapping cards. I assume :

• em0 will stay
• on-board igb4 will be renamed to igb0 I guess
• two new interfaces appear: ixl0 and ixl1

Will I loose all my firewall rules on boot as all vlans will need to be assigned to new ixl0 interface instead of previous igb0 which was on the old nic ? Do I need to recreate all vlans on new ixl0 and the firewall rules? Any way to avoid it?

I then need to swap wan to ixl0, vlans to ixl1, management to em0 and surveillance to igb0. To achieve this, I plan to remove the surveillance interface, assign the 3 others, then add back the surveillance

Is there a simpler way you advice to have the hardware upgrade done easily without a full setup of rules ?

Thank you for the help