NMCLI

Policy Based Routing

Return traffic on interface it came in on

Could not figure out using network manager because I am too depressed as of this writing to care. Ended up getting it working with ip commands and startup scripts.

• Create rule file, in my case it was /etc/sysconfig/network-scripts/rule-eth3
  • Add routes to the rule file. This will state that the interface subnet is reachable on the interface using the table specified.
  • Default route on the interface for the table, then anything coming in on that interface hits that table instead of the main table.
  • Make sure to add the rule that anything coming from the interface address also goes to that table.

***.***.***.***/** dev eth3 table 2
default via ***.***.***.*** dev eth3 table 2
iif eth3 table 2
from ***.***.***.*** table 2

Create Bridge Interface

[root@natasha ~]# nmcli con add type bridge ifname br0
[root@natasha ~]# nmcli con add type bridge-slave ifname eno1 master br0
[root@natasha ~]# nmcli con edit bridge-br0
nmcli> set ipv4.addresses 192.168.11.120/24
nmcli> set ipv4.gateway 192.168.11.1
nmcli> save
nmcli> quit
[root@natasha ~]# nmcli con up br0