The STUN prober shows the old RFC 3489 way of determining the NAT type by pinging two different servers. This is known to be faulty as pointed out by https://datatracker.ietf.org/doc/html/rfc5389#section-2 Chromium dependency removed in https://chromium-review.googlesource.com/c/chromium/src/+/6036622 BUG=None Change-Id: I2b61dfe2ff899ce71ec9d2253dc836c5908cf8c6 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/368182 Commit-Queue: Philipp Hancke <phancke@meta.com> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/main@{#43503}