BGP announcements and small providers

>> Nameservers are a bit harder to renumber, but that's not too bad.
>When you have hundreds of virtual web sites?

Uhm, sure. Just slowly decrease the TTL on your name server until you are
ready to renumber (and the TTL is set to something ridiculously low such as
1 minute). The customers will then experience something like a 1 minute
outage when you renumber. If we are going to start getting into the
procedures of HOW to renumber this should likely move to the PIER mailing
list. I think if in general people become more interested in HOW to
gracefully renumber themselves and their customers instead of worrying
about how hard it is to do they would see that while it is work, it isn't
really all that hard.

Justin Newton
Network Architect
Erol's Internet Services
ISP/C Director at Large

You're making lots of assumptions.

1) That client DNS systems will actually honor such a TTL. Many
  don't (claim they're broken all you want, but these are the facts).

2) That client SOFTWARE will actually go back and ask again for the
  IP number. Several won't (Netscrape being rumored to be one of
  them). TTLs are irrelavent in that case.

Go ahead and try to tell your customer, who purchased web service from you,
that you have the right to disrupt their operations at any time and under
any pretense and see how many of them you have left.