Re: [lwip-users] arp question

[christiaan . simons]

address@hidden wrote: -----

>The radio bridges seem to be a disservice by altering the source
>ethernet address as they do.  Nevertheless, they are able to work
>with Windows workstations, which apparently do not modify their arp
>entries based on the incoming IP traffic.

I'm unsure if windows is a good reference. Try BSD instead.

>Who's right here?  Is it legitimate to glean ethernet source
>addresses from incoming IP packets, or should one rely
>exclusively on the information presented in ARP replies? 

ARP replies are the authorative source of Ethernet
addresses whitch are the interface to a specific IP.

>I haven't been able to find any reference to the gleaning method in
>RFCs or my elderly copy of Stevens.  If gleaning is wrong, the
>solution is would seem to be as simple as deleting one's calls to
>etharp_ip_input.

I'm not sure if gleaning is wrong, but it pollutes the cache
with ununed entries since higher layers might never use them.


Christiaan Simons

Software Engineer
Axon Digital Design

+31 (0)13 511 66 66
+31 (0)13 511 41 51

address@hidden
http://www.axon.tv

The information contained in this communication is confidential and is intended solely for the use of the individual or entity to whom it is addressed. Axon Digital Design Group is neither liable for the proper nor for the complete transmission of the information contained in this communication nor for any delay in its receipt. Axon Digital Design Group does not guarantee that the integrity of this communication has been maintained nor that the communication is free of viruses, interceptions or interference. If you are not the intended recipient of this communication, you are hereby notified that reading, disseminating, distributing or copying this message is strictly prohibited. In that case please return the communication to the sender and delete and destroy all copies. In carrying out its engagements, Axon Digital Design Group applies general terms and conditions, which contain a clause that limits its liability. A copy of these terms and conditions is available on request free of charge.

The information contained in this communication is confidential and is intended solely for the use of the individual or entity to whom it is addressed. Axon Digital Design Group is neither liable for the proper nor for the complete transmission of the information contained in this communication nor for any delay in its receipt. Axon Digital Design Group does not guarantee that the integrity of this communication has been maintained nor that the communication is free of viruses, interceptions or interference. If you are not the intended recipient of this communication, you are hereby notified that reading, disseminating, distributing or copying this message is strictly prohibited. In that case please return the communication to the sender and delete and destroy all copies. In carrying out its engagements, Axon Digital Design Group applies general terms and conditions, which contain a clause that limits its liability. A copy of these terms and conditions is available on request free of charge.