Router shows different IPv6 than ifconfig (Mint 18.1)

wingman358 · 11-12-2017, 07:48 PM

So I'm trying to set up port forwarding, which I've done plenty of times. I logged into my router through my browser, click over to the port forwarding page, and select my laptop from the drop-down menu of devices. It shows my laptop's IPv6 as "2600:280:8200:d2:5168:a2c5:3e5d:409d" but when I check that in my terminal, I get a different IPv6:

Code:

 ~ $ ifconfig
[...]
wlp4s0   [...]
          inet6 addr: 2600:280:8200:d2:b37:d298:e593:7224/64 Scope:Global
          inet6 addr: 2600:280:8200:d2:d90a:46e8:bde3:da48/64 Scope:Global
          inet6 addr: 2600:280:8200:d2::5fa3/128 Scope:Global
          inet6 addr: fe80::3d81:edec:be55:e2dc/64 Scope:Link

What gives?

The router has the correct hostname for my laptop and the correct MAC, but the IPv6 doesn't match

smallpond · 11-14-2017, 08:17 AM

Are you blocking icmp? Neighbor discovery should tell the router your IP.

jlinkels · 11-14-2017, 09:02 AM

Why do you have 3 different addresses on one interface in the same scope?

jlinkels

wingman358 · 11-15-2017, 12:14 PM

Quote:

Originally Posted by smallpond

Are you blocking icmp? Neighbor discovery should tell the router your IP.

No idea.. how would I know if I was? And how would I do neighbor discovery?

Quote:

Originally Posted by jlinkels

Why do you have 3 different addresses on one interface in the same scope?

jlinkels

No idea.. I wondered about that too. I just copy and pasted the output from ifconfig