That said, the approach seems to be fairly good when you're only considering one administrative domain, and the tunnel point deployed in that administrative domain. But isn't that scenario equally addressed with a DHCP option, using a more operator-friendly approach?
Dhcp isn't supported in all cases, dns is.
-- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings