>And I don't think routed supports this.  Dunno about gated.

I haven't found the support.  I have a proxyarpd running under SunOS 4.1.3
that understands netmasks so you can have proxyarpd return the MAC address
of the gateway for a complete subnet.  I haven't had the time to
port it to work under NetBSD.  I have considered it several times, but ...

-- 
Phil Nelson                    NetBSD: http://www.netbsd.org
e-mail: phil@cs.wwu.edu        !gifs: http://www.gnu.org/philosophy/gif.html
http://www.cs.wwu.edu/~phil