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I tried

# wsl -d rancher-desktop
# iptables -vnL
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination

Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination

Use

rdctl shell

instead of

wsl -d

(because we create a network namespace, and

rdctl shell

gets you inside that namespace).

OMG yes! Thank you that did it