[Feature request] Independent firewall rules for interface

[Feature request 1]
I want to set different firewall rules for different interfaces on the same virtual machine.
So the firewall setting no longer attached to the VM, it attaches to NIC instead.

Like this:

• eth1:
  • Enable IP filtering (Do not allow IP spoofing)
  • Enable MAC filtering (Do not allow MAC spoofing)
  • Disallow DHCP
• eth2:
  • Disable IP filtering (Allow IP spoofing)
  • Enable MAC filtering (Do not allow MAC spoofing)
  • Allow DHCP

This...

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