I've just committed a change that allows users
with the permission key
'ipblock-exempt' to be exempted from ALL forms of IP blocks, including
those
which come from DNSBLs.
This permission is by default assigned to the
Sysop group, although it
can
be, as usual, applied to any group using
$wgGroupPermissions.
(See bug 3706 and r18904)
How can we on a wikimedia project enable this for a user? There aren't
added or
changed any Mediawiki messages in r18904.
You will need to file a bugzilla request to have the ipblock-exempt
permission assigned to an additional group. Then, you can ask a steward to
assign this group to users of your choice; and/or ask a developer to
implement and activate an extension that allows local sysops or bureaucrats
to assign users to this group.
Andrew Garrett
(werdna)