Sending all lan traffic to monitor PC

I setup a Windows Server 2022 PC to monitor all LAN traffic. I have the computer connected by Ethernet to the monitor PC and have this as a Firewall script for my DD-wrt router: iptables -t mangle -A POSTROUTING -d 0.0.0.0/0 -j ROUTE --tee --gw 192.168.1.254 iptables -t mangle -A PREROUTING -s 0.0.0.0/0 -j ROUTE --tee --gw 192.168.1.254 When I wireshark the ethernet adapter I don't see any mirrored traffic. Any ideas what I am missing?