This code is use mostly in revenge, if you are op in channel and you ban the host name then bans never lift till you unban the host or you dc / part the server.

on @*:BAN:#: { if ($nick == $me) { .auser nounban $banmask } }
on @*:UNban:#: { if ($nick == $me) { .ruser nounban $banmask | return } | if ($level($banmask) == nounban) && ($nick != $me) { raw -q mode # +b-k $banmask Secured.Ban } }
on *:EXIT: { .rlevel -r nounban }