nanog mailing list archives
Re: Site-Local/Unique-Local Addressing (IPv6)
From: William Herrin <bill () herrin us>
Date: Mon, 8 Jan 2018 13:12:33 -0500
On Mon, Jan 8, 2018 at 12:03 PM, Nicholas Warren <nwarren () barryelectric com> wrote:
Layman here, I was reviewing RFCs for a local address for IPv6. I came across two RFCs that seem interesting. 3879 Which deprecates Site Local Addresses. 4193 Which seems to add Unique Local Addresses. What is the main difference here? Why was this standard removed then added back?
Hi Nich, ULA is the IPv6 equivalent to RFC1918. If assigned as instructed (randomly), it can be used to build multi-organziation private networks with a relatively low risk of collision, a property lacking in RFC1918. Other than that, it's exactly the same as RFC 1918. Site local is deprecated. As explained in the RFC, the concept of a "site" could not be usefully defined for the purpose of private addressing. You can safely ignore it. Regards, Bill Herrin -- William Herrin ................ herrin () dirtside com bill () herrin us Dirtside Systems ......... Web: <http://www.dirtside.com/>
Current thread:
- Site-Local/Unique-Local Addressing (IPv6) Nicholas Warren (Jan 08)
- Re: Site-Local/Unique-Local Addressing (IPv6) Chuck Anderson (Jan 08)
- Re: Site-Local/Unique-Local Addressing (IPv6) William Herrin (Jan 08)