Re: ICMP echo check

Akihiro Tominaga <tomy@sfc.wide.ad.jp> Thu, 02 December 1993 02:53 UTC

Message-Id: <9312020231.AA00148@shonan.sfc.wide.ad.jp>
To: Rob <robs@akhnaten.uucp>
Cc: host-conf@sol.cs.bucknell.edu
Subject: Re: ICMP echo check
In-Reply-To: Your message of "Wed, 01 Dec 1993 16:37:42 PST." <9312020037.AA08257@join.com>
Date: Thu, 02 Dec 1993 11:31:00 +0900
Sender: ietf-archive-request@IETF.CNRI.Reston.VA.US
From: Akihiro Tominaga <tomy@sfc.wide.ad.jp>

>> #1. If the server has sufficient intelligence to use ICMP, it presumably
>>     can be built to contain the intelligence to see who sent the ICMP
>>     ping reply, and only NAK the address if the reply comes from a
>>     hardware address other than the one for which the tentative
>>     binding has been established. 

Do you considerate of the case that client exist in other subnet, and
DHCP negotiation is working via relay agent ?

If the ICMP echo reply is forwarded via some gateway, how can server
recognize the hardware address ?  (In this case, the source hardware
address of the ETHER frame which contains ICMP echo reply is gateway's
hardware address. )

--
Keio UNIV.
WIDE Project.
			Akihiro Tominaga (tomy@sfc.wide.ad.jp)

Re: ICMP echo check Akihiro Tominaga