Can not start DNS container with both ipv4 and ipv6 servers

[tmodoux]

When trying to configure DNS with ip6 entry, e.g. :

  "dns": {
    ...
    "port": 5353,
    "ip": "0.0.0.0",
    "ip6": "::",
    ...
  }

, the DNS container crashes and restarts indefinitely with the following error :

Error: bind EADDRINUSE :::5353

See the full error in Aibrake.

The release in question is service-register:1.3.46.