I've finally updated my code for dynamic netstat to the current netstat
src.  While I'm still working on the code, an i386 binary is available
at ftp://ftp.resort.com/pub/netbsd/netstat.gz

this version of netstat adds the -C option a la sgi netstat (from which
the interface has been ruthlessly stolen).  It uses curses to present a
continuous update of all your favorite netstat things.