TLS issues with Lumen (CenturyLink)

[Andrew Gray <3356 () blargh com>]

Can someone from Lumen/CenturyLink contact me off-list?

We are seeing issues with some traffic coming from customers inside 
AS209 (and only AS209) that appear to be hitting some sort of 
in-the-middle inspection that is causing TLS issues (showing that the 
certificates are invalid).

Thanks!