Two new tests, failing until the fix. Entries such as
::ffff:10.0.0.0/104 and ::ffff:0:0/96 must load as 10.0.0.0/8 and
0.0.0.0/0, since the fetcher matches an IPv4-mapped address as the IPv4
address it holds. An entry in that form shorter than /96, such as
::ffff:0:0/95, must abort startup naming blocked_networks.
Model: opus-5-5