GitLab

ICANN designated the IPv4 address 127.0.53.53 as meaning a name collision occurred during resolution (as a way to discover real world conflicts around the new gTLDs).

This change makes such resolutions now fail with:
  ICANN_NAME_COLLISION.

IP literals are exempt from the policy and will continue to work as before (meaning you can still navigate to http://127.0.53.53).

This only affects IPv4 results.

BUG=470704

Review URL: https://codereview.chromium.org/1035803003

Cr-Commit-Position: refs/heads/master@{#322309}