- install latest ddwrt firmware, BS build is recommended
- setup endpoint(VPN SERVER) config following WireGuard
- setup peer config in ddwrt
- add startup firewall rules for wireguard oet1 (Administration/Command)
ip rule add from 192.168.18.0/24 lookup 100
ip route add table 100 default via 192.168.2.1 dev oet1
ip route add table 100 192.168.8.0/24 via 192.168.8.1 dev br0
iptables -t nat -A POSTROUTING -s 192.168.18.0/24 -o oet1 -j MASQUERADE