home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.protocols.tcp-ip
- Path: sparky!uunet!usc!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!ames!sun-barr!cs.utexas.edu!torn!csd.unb.ca!mta.ca!DEDGAR
- From: dedgar@mta.ca
- Subject: ARP & Duplicate IP addresses
- Message-ID: <1992Nov20.202906.9279@jupiter.sun.csd.unb.ca>
- Sender: news@jupiter.sun.csd.unb.ca
- Reply-To: dedgar@mta.ca
- Organization: Mount Allison U, Sackville, N.B. Canada
- Date: Fri, 20 Nov 1992 20:29:06 GMT
- Lines: 31
-
- Hello Net
-
- I would value opinions, advice and information on the topic of handling
- duplicate IP addresses with ARP.
-
- Specifically
- - Is it a good idea to ARP your own IP address on startup? A returning
- ARP would tell you that the address was a duplicate.
- - if so is it a good idea to automatically shut your interface down
- if a duplicate IP address is detected on startup? Are there any
- situations where false returns might be reported?
- - What about detecting one after startup? Should you advise the user
- and gently start terminating connections? Could be real annoying.
-
- - If you receive an incoming ARP request and the sender IP address matches
- yours should you reply to it? Doing so would advice the other node that
- a duplicate exists (assuming it checks) but also could hopelessly confuse
- a host that doesn't. All of the implementations that I have tested do not
- reply - but I have not tried all that many.
-
- - What are the consequenses of staying up with a duplicate IP address?
-
- I would value some insight into this topic. Thank You
-
- - Dale Edgar
- Cybernetic Control Inc.
- DEDGAR@MTA.CA
-
-
-
-
-