Hi,
But if that channel fails, you will lose connectivity at all. ... to destinations that filter the /48 and have no default route.
No. When I tried to announce /48 last time (near one year ago) - it was filtered out at third hop or so. Also it wasn't present at all looking glasses. Hm. Now it is interesting to try out it now. Just try tomorrow and say the result ;)
That's NOT like PI or more specific IPv4 that can be announced and is working in the wild as an independent part of Internet.
As long as the aggregate is visible, reachability is as good as for IPv4 PI space, if not better.
As long as the aggregate is visible, assuming I have connectivity from my primary uplink. And when it is not visible - I can't get connectivity at all :( -- WBR, Maxim V. Tulyev (MT6561-RIPE, 2:463/253@FIDO)