Talk:IPv6 address

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Internet Mid‑importance

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Is 2002::/16 really deprecated?

The section on reserved addresses says:

2002::/16 — This prefix was used for 6to4 addressing (an address from the IPv4 network 192.88.99.0/24 was also used). The 6to4 addressing scheme is deprecated.

While citing RFC 7526. But the RFC clearly says in section 4:

The basic unicast 6to4 mechanism defined in [RFC3056] and the associated 6to4 IPv6 prefix 2002::/16 are not deprecated. The default address selection rules specified in [RFC6724] are not modified.

AFAIU this RFC only deprecates the anycast version of 6to4 and the associated IPv4 prefix:

This document formally deprecates the anycast 6to4 transition mechanism defined in [RFC3068] and the associated anycast IPv4 address 192.88.99.1. It is no longer considered to be a useful service of last resort.

The prefix 192.88.99.0/24 MUST NOT be reassigned for other use except by a future IETF Standards Action. StayFoolish2021 (talk) 07:46, 20 April 2023 (UTC)[reply]

A Commons file used on this page or its Wikidata item has been nominated for speedy deletion

The following Wikimedia Commons file used on this page or its Wikidata item has been nominated for speedy deletion:

Ipv6 address leading zeros.svg

You can see the reason for deletion at the file description page linked above. —Community Tech bot (talk) 09:55, 21 April 2023 (UTC)[reply]

SLAAC Interface identifier composition from MAC address is not accurate

The example about converting 48-bit MAC address into 64-bit interface identifier should be clearer. It appropriately describes addition of FF-FE in the middle, but is missing that the universal/local bit (next to lowest in first byte) should be complemented in the (common) case of Ethernet interface. There is a footnote comment stating this, but in my opinion it could be said more clearly (in a single short sentence) in the actual paragraph. RFC 2464 describes this quite clearly and could be referenced here. Pasisar (talk) 08:45, 4 March 2024 (UTC)[reply]