Port 0 is reserved and connections to it are immediately rejected on
Windows and macOS. Because of this, it could be abused to probe the DNS
cache.
Bug: 391658086
Change-Id: I7d17c7422e676bef4617b0686cef7087036b92f0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6234235
Reviewed-by: Adam Rice <ricea@chromium.org>
Commit-Queue: Tom Van Goethem <tov@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1417059}