@romo said in EdgeRouter L2TP VPN can't pass IKE phase 1:

A DNAT rule was the culprit of everything, it was redirecting the traffic and not letting it reach WAN_LOCAL.

FINALLY SOLVED!!!!!!!!!!!!!!!!!!!!!!!!!

As reminder for anyone that could encounter a similar issue:
DNAT rules are evaluated before firewall rules.

Yes, this is a known function of VyOS/EdgeOS. But nothing was ever posted baout DNAT rules in use, so I assumed there were none. There are not by default.