How to find IPv6 addresses of devices on the LAN?

pokeefe0001 · 03 Jul 2018

When I ping another Windows device on my LAN my local Windows uses an IPv6 address. (I think I have IPv4 pings blocked by my firewalls.) A packet trace shows Windows issuing NBNS, MDNS, and LLMNR packets which seem to be from 3 different network discovery procedures. The MDNS and LLMNR responses both return IPv6 addresses.

Is there any command, either from Microsoft or 3rd party, that returns IPv6 addresses gathered by these (or other) commands.

"NSLOOKUP -query=AAAA ...." would work if the addresses were registered on my router's name server, but they are not. (My router's DNS does not return IPv6 addresses that it knows about, and the ping used link-local addresses that are not provided to DNS servers anyway.)

Some network scanning tools - SoftPerfect's Network Scanner, for instance - find some of the IPv6 addresses on my LAN, but I want to be able to query the addresses for a specify device name, not scan the whole address. (And even the SoftPerfect tool does not find the IPv6 addresses for my Synaology NAS. And a "ping -6 ..." by name for the Synaology NAS fails but a "ping -6 ..." by address succeeds. The Synology NAS must work at hiding its IPv6 address.)

Digital Life · 03 Jul 2018

Try using "netish" in Powershell or Command prompt on your Windows computer.
Source: How To In IPv6

Code:

netsh interface ipv6 show neighbors

Not sure how old your NAS is but it more than likely runs some form of Linux, Can you open a terminal on it and try these commands.

Code:

ip -br a

Or

Code:

networkctl status

Or

Code:

ip neighbor

Or if it is old and does not have iproute2 installed

Code:

ifconfig

pokeefe0001 · 03 Jul 2018

Well, yes. but that's not the kind of answer I was looking for.

The netsh command does not associate names with the addresses.
The other suggestions require, as you mentioned, that I get an SSH (or similar) connection with the NAS .

The information I want to display is all information Windows already has or can obtain through various discovery technique. (Windows does what I want when a Ping is issued. It uses the results but doesn't display them.)