Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Post History

66%
+2 −0
Q&A How is the IPv6 link-local address calculated?

I was told that an IPv6 link-local address — typically starting with fe80:: — is derived from the interface's MAC address. Here are some instruction on how to do the conversion. But the conversion...

1 answer  ·  posted 1y ago by Matthias Braun‭  ·  last activity 1y ago by Matthias Braun‭

Question networking ipv6
#2: Post edited by user avatar Matthias Braun‭ · 2023-07-08T22:35:14Z (over 1 year ago)
grammar
  • I was told that an IPv6 link-local address — those typically starting with `fe80::` — is derived from the interface's MAC address. [Here](https://ben.akrin.com/mac-address-to-ipv6-link-local-address-online-converter/) are some instruction on how to do the conversion.
  • But the conversion result doesn't match my actual IPv6 link-local address according to `ip a`. My IPv6 link-local addresses and MAC addresses don't seem related at all.
  • **How is the IPv6 link-local address really calculated?**
  • I'm on Arch Linux using NetworkManager 1.42.6.
  • I was told that an IPv6 link-local address — typically starting with `fe80::` — is derived from the interface's MAC address. [Here](https://ben.akrin.com/mac-address-to-ipv6-link-local-address-online-converter/) are some instruction on how to do the conversion.
  • But the conversion result doesn't match my actual IPv6 link-local address according to `ip a`. My IPv6 link-local addresses and MAC addresses don't seem related at all.
  • **How is the IPv6 link-local address really calculated?**
  • I'm on Arch Linux using NetworkManager 1.42.6.
#1: Initial revision by user avatar Matthias Braun‭ · 2023-07-08T21:26:11Z (over 1 year ago)
How is the IPv6 link-local address calculated?
I was told that an IPv6 link-local address — those typically starting with `fe80::` — is derived from the interface's MAC address. [Here](https://ben.akrin.com/mac-address-to-ipv6-link-local-address-online-converter/) are some instruction on how to do the conversion.

But the conversion result doesn't match my actual IPv6 link-local address according to `ip a`. My IPv6 link-local addresses and MAC addresses don't seem related at all.

**How is the IPv6 link-local address really calculated?**

I'm on Arch Linux using NetworkManager 1.42.6.