Tell HN: AT&T Fiber is breaking TLS handshakes

A lot of people didn't realize this was a widespread issue until they saw other people point it out (me included), so I thought I'd post it here. It's at least affecting the Bay Area.

AT&T Fiber seems to be sometimes flipping a bit in the TLS handshake, causing TLS connections to break. This can show up as connections to TLS sites not working on the first try, your browser stuck on "Performing a TLS handshake", SSL_ERROR_BAD_MAC_READ in Firefox, etc.

If you tunnel your browsing through a VPN, that will work around this issue. It doesn't seem like anything else obvious is affected - gaming, video calls, etc. seem to work fine.