Responds to ARP requests for specified subnet

[Dmytro Bablinyuk]

The linux box shall respond to ARP requests for a specified subnet and accept an IP packets for that subnet though the box itself can reside in another subnet.
For example:
The box has IP 172.25.206.4, the mask is 255.255.255.0
The box shall responds to ARP requests for subnet 172.25.207.* and accept any IP packets for that subnet ie IP packets sent to the 172.25.207.2 etc. These packets will be proceed further by a user space application.

Could anybody please suggest a best techniques that can be used for that task.
I have looked at the netfilters hooks in the kernel, is this the right direction?
Can anybody please reference to the software, which does the similar thing.

Thank you very much for any help


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