RE: BPF to filter/mod ARP

Reply: Michael Tuexen : "Re: BPF to filter/mod ARP"
In reply to: Michael Tuexen : "Re: BPF to filter/mod ARP"
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From: Scheffenegger, Richard <Richard.Scheffenegger_at_netapp.com>
Date: Wed, 01 Mar 2023 21:10:19 UTC

>> On 1. Mar 2023, at 21:33, Scheffenegger, Richard <rscheff@freebsd.org> wrote:
>>
>> Hi group,
>>
>> Maybe someone can help me with this question - as I am usually only looking at L4 and the top side of L3 ;)
>
>> In order to validate a peculiar switches behavior, I want to adjust some fields in gracious arps sent out by an interface, after a new IP is assigned or changed.

> Wouldn't scapy allow you to do this kind of testing?

Unfortunately not - I don't want to forge another packet, I want to make sure only the specific one is being sent, with the standard GARP retransmissions and so on.

Richard