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-   -   Router shows different IPv6 than ifconfig (Mint 18.1) (https://www.linuxquestions.org/questions/linux-networking-3/router-shows-different-ipv6-than-ifconfig-mint-18-1-a-4175617503/)

wingman358 11-12-2017 07:48 PM

Router shows different IPv6 than ifconfig (Mint 18.1)
 
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 (Post 5780545)
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 (Post 5780560)
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


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