Re: ICMP's & IP src addrs


Karl Kleinpaste (triceratops.cis.ohio-state.edu!karl@tut.cis.ohio-state.edu)
15 Sep 88 17:37:25 GMT


As long as I was at it, I decided to look at what a large collection
of diverse machines did with pings to .255. I hit our backbone
ethernet (128.146.8, a little over 100 hosts) with a ping like this,
and the results are:

Responding with 128.146.8.255:
Sun-3/180 (SunOS 3.5.1 [UNIX]).

Responding with their own addresses:
HP-9000 (HP-UX [UNIX]), IBM-RT/PC (Mach), Proteon P4200, BBN Butterfly
(Mach), Pyramid (OSx 4.x [UNIX]), Encore Annex telnet server.

Not responding:
DEC-2060 (TOPS 6.1; responds to direct ping), AT&T 3B2/400 (SysV
Rel3.0 + TWG WIN; responds to direct ping), Kinetics Mac gateways
(KIP; doesn't respond to direct ping), Encore Multimax (Umax 4.2;
responds to direct ping), TI Explorer (Zetalisp; responds to direct
ping), Xerox-1108 (Interlisp; responds to direct ping).

Also, we have one HP-9000 client subnet. When pinging that subnet's
broadcast addr (128.146.43.255), *only the server* responded - the
rest were silent. Weird.

--Karl



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