Hi I need to redirect http traffic on port 80 of a dynamically assigned IP to 
an internal server.  The ipf documentations says the syntax is:

rdr ne0 ExternalIP/mask port 80 -> InternalIP port 80 tcp
rdr ne0 ExternalIP/mask port 80 -> InternalIP port 80 udp

The problem is that ExternalIP is, as I mentioned, dynamic and I have no way 
of knowing what it is.  PF allows you to use an interface and the translation 
from interface to ip is done at run time.  This however doesn't seem to be 
the case with ipf.

Anyone can help me?

Thanks,
chepati