*BSD News Article 68887


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Can't traceroute to virtual hosts
Date: 18 May 1996 22:42:40 GMT
Organization: Private BSD site, Dresden
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  <4mkakq$51s@uriah.heep.sax.de> <4nd1nv$1cn@anorak.coverform.lan>
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Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
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zeno@serv.net (Sean T. Lamont) wrote:

> >The mask should be 0xffffffff - meaning that anything on this network can
> >be reached down this interface.... ie. only that machine.
> 
> From a TCP/IP standpoint, this makes little sense. All bits are significant
> for the network, none for the host? What about IP broadcast for that 
> subnetwork?

It is already caught by the `primary' address of this interface.  Only
the `secondary' address(es) should get 0xffffffff.  (I.e., unlike
filename hard links, the different aliases are not uniform each
other.)

From a TCP/IP standpoint, alias addresses are a DON'T DO anyway. :)

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)