nanog mailing list archives
Re: subnet prefix length > 64 breaks IPv6?
From: Alexandru Petrescu <alexandru.petrescu () gmail com>
Date: Sat, 24 Dec 2011 12:16:07 +0100
Le 24/12/2011 11:58, Karl Auer a écrit :
On Sat, 2011-12-24 at 15:37 +0530, Glen Kent wrote:Ok. So does SLAAC break with masks> 64?"Break" is not the right word. SLAAC only works with /64, But that is by design.
SLAAC only works with /64 - yes - but only if it runs on Ethernet-like Interface ID's of 64bit length (RFC2464). SLAAC could work ok with /65 on non-Ethernet media, like a point-to-point link whose Interface ID's length be negotiated during the setup phase. Other non-64 Interface IDs could be constructed for 802.15.4 links, for example a 16bit MAC address could be converted into a 32bit Interface ID. SLAAC would thus use a /96 prefix in the RA and a 32bit IID. IP-over-USB misses an Interface ID altogether, so one is free to define its length. Alex
Regards, K.
Current thread:
- subnet prefix length > 64 breaks IPv6? Glen Kent (Dec 23)
- Re: subnet prefix length > 64 breaks IPv6? sthaug (Dec 23)
- Re: subnet prefix length > 64 breaks IPv6? Glen Kent (Dec 24)
- Re: subnet prefix length > 64 breaks IPv6? Karl Auer (Dec 24)
- Re: subnet prefix length > 64 breaks IPv6? Alexandru Petrescu (Dec 24)
- Re: subnet prefix length > 64 breaks IPv6? Glen Kent (Dec 24)
- Re: subnet prefix length > 64 breaks IPv6? Jonathan Lassoff (Dec 24)
- Re: subnet prefix length > 64 breaks IPv6? Glen Kent (Dec 24)
- Re: subnet prefix length > 64 breaks IPv6? sthaug (Dec 23)
- Re: subnet prefix length > 64 breaks IPv6? Sven Olaf Kamphuis (Dec 24)
- Re: subnet prefix length > 64 breaks IPv6? Glen Kent (Dec 26)
- Re: subnet prefix length > 64 breaks IPv6? Glen Kent (Dec 27)
- Re: subnet prefix length > 64 breaks IPv6? Valdis . Kletnieks (Dec 27)
- Re: subnet prefix length > 64 breaks IPv6? Joel Maslak (Dec 27)
- Re: subnet prefix length > 64 breaks IPv6? Chuck Anderson (Dec 27)