Hi, Erik...
Erik Auerswald wrote:
Hi,
On 2/14/19 17:21, Grant Taylor wrote:
On 02/14/2019 01:31 AM, Erik Auerswald wrote:
<huge snip>
Linux's cavalier default behaviour in answering ARP requests might be
motivated by the weak ES model in helping other systems on the LAN
reach the Linux server, even if they use an IP address assigned to
another LAN the Linux server is connected to. Thus the problem of "ARP
flux" is probably closely related to how Linux implements the weak ES
model, but not necessarily to the weak ES model itself as described in
RFC 1122.
Thus I argue that using "ARP flux" to describe the ARP problem
observed with Linux is preferable to attributing the problems to
Linux's implementation of the weak ES model.
Please note that I have not searched for the origin or an
authoritative source on "ARP flux", and cannot guarantee that it is
indeed consistently used to describe the aforementioned problem. But
it did turn up on related web searches, and seems to directly refer to
the ARP problem at hand.
Sorry for being pedantic.
Thanks so much for a very cogent explanation of the difference. I'd been
meaning to do some digging since spying this thread scrolling by. One of
the things I like best about this list is the way it makes me scratch my
head. Usually, someone else comes up with a good answer before I'm done
scratching, which is another thing I like. :-)
Some interesting discussion of the Linux ARP flux problem, here (2.1.4
et seq):
http://linux-ip.net/html/ether-arp.html
Linked from there, and perhaps relevant to the original problem:
http://ja.ssi.bg/#iparp
(I guess I should probably push those to the original thread.)
--
Lewis
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Lewis G Rosenthal, CNA, CLP, CLE, CWTS, EA
Rosenthal & Rosenthal, LLC www.2rosenthals.com
visit my IT blog www.2rosenthals.net/wordpress
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