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Was able to ping an address outside of my subnet

So I was looking at Wireshark trying to analyze the mess and learn the tool. I saw something wierd in where hundreds of TCP packets were being sent to an IP address.

My network is let's say 192.168.254.0/24

I was watching packets going from 192.168.255.1 to 192.168.255.2.

The Mac address belongs to my router, so my router was sending packets to 192.168.255.2.

Is 192.168.255.2 me? I could ping 192.168.255.1 but not .2.

How could I send pings outside of my subet and what could my router be doing that it would be sending packets over a different subnet and for so long?

It's just a mutlipurpose wifi/switch/router from Arris

5 comments
24% Upvoted
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level 1

If you have a gateway set, the packets are sent to the gateway to route them.

If you don't, the router could be proxy-arping the requests.

level 2
CCNP2 points · 2 months ago

Proxy ARP was the first thing that came to my mind too

level 2
Original Poster1 point · 2 months ago

I've never heard of this before. I looked online and it looks like my host would have to have no gateway but it does. Can you explain how this would work in my network? If you don't mind

level 1

You said MAC of 192.168.255.1 is your router? So what is the MAC of 192.168.255.2? What kind of packets (ports)?

level 2
Original Poster1 point · 2 months ago

Actually the address of my router is 192.168.254.254 on my LAN. I only know 192.168.255.1 is my router too because the Mac address is only off by one chacter at the end.

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