[ale] [EXTERNAL] Re: Hijacking my own IP

[Byron Jeff]

Not to be glib, but wouldn't the simplest solution be to just turn the
printer off?

Or as an alternative, if your machine isn't offering any services, simply
to temporarily assign it a different IP statically?

Two different devices with the same IP address really has no workable
solutions. There will be continuous conflict between the two devices trying
to update the ARP cache with two different MAC addresses with the same IP.

BAJ

On Fri, Jun 11, 2021 at 04:01:12PM +0000, Chris Fowler via Ale wrote:
>    Someone else screwed up assigning IPs.  I'm waiting for an IP change.
>    While waiting, I want my connection to remain up.
>      __________________________________________________________________
> 
>    From: Ale <ale-bounces at ale.org> on behalf of Calvin Harrigan via Ale
>    <ale at ale.org>
>    Sent: Friday, June 11, 2021 11:55 AM
>    To: ale at ale.org <ale at ale.org>
>    Cc: Calvin Harrigan <calvin.harrigan at gmail.com>
>    Subject: Re: [ale] Hijacking my own IP
> 
>    On 6/11/2021 11:53, Chris Fowler via Ale wrote:
> 
>    I have a HP printer and Linux device with the same IP address on a
>    network.  I have no control over the printer.  I'm trying to figure out
>    how to effectively use arping to "hijack" my own IP on this subnet.
> 
>    My remote connection to the device is dropped at random times.  I'm
>    guessing maybe someone is printing. This causes the firewall to update
>    its arp cache, send a packet to the HP instead of my device, and I get
>    a RST on my end because the HP said, "I have no clue what this is."
> 
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>    I guess some background on why the printer and linux device has to use
>    the same address might clear it up a bit for us.
> 
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> References
> 
>    1. mailto:Ale at ale.org
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-- 
Byron A. Jeff
Associate Professor: Department of Computer Science and Information Technology
College of Information and Mathematical Sciences
Clayton State University
http://faculty.clayton.edu/bjeff