or, use link-local address on IX switch as documented in
draft-kato-bgp-ipv6-link-local-01.txt.Unfortunatly, that technique does not have broad commercial
implementation. In addition, there was some pushback from
the IETF IDR wg on using this technique. So its still a bit
"iffy", although a very elegent "haq". (we used it in LA
for a while but could not get folks to adopt it.)
cisco IOS can do it, IIRC. i'm always doing it with zebra .
anyway, i'm not sure if it fits "broad implementation", so i'll stop.
itojun