> http://www.kfu.com/~nsayer/6to4/
Actually this web page brings up another issue that a freind and
I were discussing just yesterday. Anyone who's actually tried to
use 6to4 (2002::/16) has probably noticed that they need a default
route to reach the 6bone. But even assuming you actually find such
a router it is almost always on the far side of the Internet; which
means that your packets get to take the scenic route on their way
to the 6bone.
One simple solution to this would seem to be to use a well known
IPv4 "anycast" address (call it "a.b.c.d" for now) for all 6to4
gateways.
In this way, anyone using 6to4 could reliably use 2002:(a.b.c.d)::1
(actual IPv6 address syntax will vary) as a default route to the
6bone.
6to4 gateways would advertise to the their IPv4 peers that they
have a route for "a.b.c.d". And for their IPv6 peers (the 6bone)
they can advertise a route for 2002::/16.
Does anyone see a problem with this? I dont suppose there's already
a block of IPv4 address space set aside for anycast?
brad
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