dynamic ppp hostmasks, additional hosts

[Craig F.]

Basically, im after two things, one to know if this is possible, and if so,
how to go about doing it.

so, i guess its all about IRC, but I have a small NAT network (one IP). I
have a hostmask like 'ppp-01.isp.com'. What i want is to run a dns on that
hostmask and resolve requests to 'myhost.ppp-01.isp.com' to the same IP,
basically for Vhosting on IRC, multiple IRC users on EFNET is a pain in the
ass with those dumb I:Lines.
Another problem is that this has to be dynamic, as everytime i connect the
hostmask changes.

Replys to group obviously.

Craig F.