I just signed up after being a FiOS customer for years. But some connections to the Internet are hanging. In particular I have a VPS that has names like www.example.com and mail.example.com. They both refer to the same machine. If I use www.example.com with ssh, it works. Buf if try to ssh to example.com (no www) or if my mail client tries to connect to mail.example.com on IMAP port 143, it hangs because it's trying to use IPv6. From the server log I see no communication from my IP at all.
So something is dropping my IPv6 connections. Does anyone have an idea as to what it could be?
I suppose I could just disable IPv6 somewhere but it would be nice if it worked.