Path: utzoo!utgpu!water!watmath!clyde!att!ucbvax!LANL.GOV!cpw%sneezy From: cpw%sneezy@LANL.GOV (C. Philip Wood) Newsgroups: comp.protocols.tcp-ip Subject: Re: ICMP's & IP src addrs Message-ID: <8809221429.AA15784@sneezy.lanl.gov> Date: 22 Sep 88 14:29:52 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 19 I vote for hosts NOT responding to broadcast ping's. If you want to find out who is on your net: set networkpart=192.5.16 @ subnet = 1 @ maskfactor = 32 @ host = 1 @ subnetpart = ( $maskfactor * $subnet ) while ( $host < $maskfactor ) @ hostpart = ( $subnetpart + $host ) set address="$networkpart.$hostpart" icmp echo vanilla $address @ host = ( $host + 1 ) end But, if you do respond to broadcasts you better put in the IP address of the interface the broadcast came in on in your response! Phil Wood.