On May 29, 2007, at 8:23 AM, Donald Stahl wrote:
vixie had a fun discussion about anycast and dns... something
about him
being sad/sorry about making everyone have to carry a /24 for f-root
everywhere.
Whether it's a /24 for f-root or a /20 doesn't really make a
difference- it's a routing table entry either way- and why waste
addresses.
I once suggested that due to the odd nature of the root name server
addresses in the DNS protocol (namely, that they must be hardwired
into every caching resolver out there and thus, are somewhat
difficult to change), the IETF/IAB should designate a bunch of /32s
as "root server addresses" as DNS protocol parameters. ISPs could
then explicitly permit those /32s.
However, the folks I mentioned this to (some root server operators)
felt this would be inappropriate.
Rgds,
-drc
