Whitelist + swarm can't get real source ip

Traefik Traefik v2
,
2

This is caused due to the additional "overlay" network; you can bypass this by using "host" networking. The only downside is that you can only run one instance of Traefik per node. That being said, you should really be spreading your Traefik instances across nodes anyway, so it isn't really a problem.

services:
  traefik:
    ...
    ports:
      - target: 80
        published: 80
        protocol: tcp
        mode: host
      - target: 443
        published: 443
        protocol: tcp
        mode: host
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