Can't connect to update.freebsd.org.

[Ben jamin]

When I try to run freebsd-update with a default config I get:

> Looking up update.FreeBSD.org mirrors... none found.
> Fetching public key from update.FreeBSD.org... failed.
> No mirrors remaining, giving up.
>

update1.freebsd.org and update2.freebsd.org appear to be down. I had to
modify the server in freebsd-update.conf to update3.freebsd.org in order
for it to work.