Hello Ok. This doesn't seem to correspond with your earlier email. My broadcast address is not just the local part with the bits set to one. >From ifconfig output: Net mask 255.255.255.0 broadcast 10.255.255.255 The other boxes were of this form Netmask 255.255.255.0 broadcast 10.0.1.255 The second example ifconfig goes with your email below. "one is the net local one, where all bits or the local part are one" I think you are saying the local part is where the netmask is zero. JD Bernd Eckenfels <ecki@lina.inka.de> on 10/24/2002 01:32:04 PM To: John F Davis/Raleigh/IBM@ibmus cc: linux-net@vger.kernel.org Subject: Re: netmask out of sync with broadcast? On Wed, Oct 23, 2002 at 09:45:18AM -0400, John F Davis wrote: > So, its not a problem? That's cool. It still seems that the broadcast > would be > the entire 10.x.x.x network. no, there are two ipv5 broadcast addresses. One is the media global 255.25.255.255 (all bites =1) and one is the net local one, where all bits of the local part are one. The local part is always defined by the netmask. We have classless networks for a few years now, so netmasks are the only definition on what is local and what not. On 10.0.0.0/30 your broadcast is 10.0.0.3 your network address is 10.0.0.ß and hsts can have 10.0.0.1 or 10.0.0.2. Greetings Bernd -- www.freefire.org - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html