Fix bug in display_prefix
Fix bug in display_prefix

The prefix has to be casted from cidr to inet before we can properly do
a set_masklen on it, otherwise the new prefix address will be set to the
base network address of the parent prefix and not the actual prefixs
address which is the whole point of display_prefix.

fredsod/NIPAP,SpriteLink/NIPAP,garberg/NIPAP,plajjan/NIPAP,garberg/NIPAP,SpriteLink/NIPAP,garberg/NIPAP,ettrig/NIPAP,ettrig/NIPAP,ettrig/NIPAP,garberg/NIPAP,fredsod/NIPAP,SpriteLink/NIPAP,SpriteLink/NIPAP,garberg/NIPAP,garberg/NIPAP,fredsod/NIPAP,plajjan/NIPAP,fredsod/NIPAP,SoundGoof/NIPAP,bbaja42/NIPAP,bbaja42/NIPAP,SpriteLink/NIPAP,ettrig/NIPAP,plajjan/NIPAP,SoundGoof/NIPAP,ettrig/NIPAP,bbaja42/NIPAP,bbaja42/NIPAP,SoundGoof/NIPAP,SoundGoof/NIPAP,SoundGoof/NIPAP,plajjan/NIPAP,SoundGoof/NIPAP,SpriteLink/NIPAP,bbaja42/NIPAP,plajjan/NIPAP,ettrig/NIPAP,plajjan/NIPAP,bbaja42/NIPAP,fredsod/NIPAP,fredsod/NIPAP