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Questions tagged [proxy-arp]

Use this tag for everything that involves proxying the ARP protocol, from the proxy_arp setting in Linux's /proc, to a gateway answering to ARP requests on behalf of a full network on another interface.

2
votes
2answers
316 views

Is promiscuous mode needed for proxy arp?

edit: I have found that this is a duplicate of Why ARP Response only when network adapter in promiscuous mode?. I use a Raspberry Pi 3B+ with Rasbian Stretch and set it up with proxy arp following ...
1
vote
1answer
583 views

How to add arp entry for an entire subnet (/16)?

I would like to add ARP entry for an entire subnet (10.50.0.0/16). I tried : arp -v -i p4p1 -s 10.50.0.0 MAC_OF_P4P2 netmask 255.255.0.0 pub But the command returns: arp: SIOCSARP() SIOCSARP: ...
4
votes
0answers
828 views

Linux does not proxy-arp for me, despite the documentation suggesting that it does

I am working on a PDP-10 emulator (see https://github.com/Rhialto/klh10 ). The operating system installed inside it may want to communicate with the outside world via IPv4 (which was just gaining use ...
3
votes
1answer
287 views

Enabling proxy_arp for interface eth2.1

Am trying to enable proxy arp for some of the interfaces, with the normal interface name eth0, eth1, etc [root@eth2.1]# sysctl net.ipv4.conf.eth0.proxy_arp 0 But for interface names such as "eth1....
5
votes
1answer
4k views

eth0 is proxy-arping, but /proc/sys/net/ipv4/conf/eth0/proxy_arp is 0

I'm scratching my head about this question... I have a debian squeeze machine that is connected to an internal lab network. We have a lot of machines that have default proxy-arp configurations on ...