How to get the IP addresses of a device using its MAC id from inside a Docker Container?

Asked Sep 14 '17 at 16:41

Active Sep 14 '17 at 16:41

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Is there a way to get the IP address of a device (running on my host machine) if I know its MAC address from inside a Docker Container? I have already tried all the solutions suggested in here.

1) Trying to broadcast ping and using arp -a only gives the Gateway address, since docker is running inside a subnet.

2) Using nmap I cannot verify the MAC, I could only see if there is a live host in that address.

I tried the above by running docker in --privileged mode and still the results are the same.

asked Sep 14 '17 at 16:41

Nesh

how about running with `--net host`? – Tarun Lalwani Sep 14 '17 at 17:12
The container your are running. `docker run --net host .....` – Tarun Lalwani Sep 15 '17 at 07:58
Running Docker with `--net host`, solves the issue but compensates the feature of docker (which is to run isolated from host network) – Nesh Sep 15 '17 at 08:02
I am not a networking expert but I think this may not be straightforward. See this https://superuser.com/questions/763371/arp-requesting-to-another-subnet-how and https://networkengineering.stackexchange.com/questions/27869/arp-scan-different-subnet – Tarun Lalwani Sep 15 '17 at 08:06
Thanks for this. – Nesh Sep 15 '17 at 08:21

How to get the IP addresses of a device using its MAC id from inside a Docker Container?

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