 aefstoggaflmOpen Source FanPremium
join:2002-03-04
Bethlehem, PA
kudos:2
 ·Verizon Online DSL
| reply to nitzguy
Re: [Cable] Who is ready for World IPv6 day (June 6, 2012)? said by nitzguy:Sure, but remembering some hexadecimal address, I feel like I'm back in the 1980s with my NES game with the password that's impossible to remember....its a HEADACHE.
Also see the info that is at »www.tcpipguide.com/free/t_IPv6Ad···ti-2.htm
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Please use the "yellow (IM) envelope" to contact me and please leave the URL intact. |
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| reply to brad
as per iana recommendations all isps give out a single /64. ra needs a full /64 to function. ipv6 is the only FAIL here. |
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| reply to mactalla
It sounds like you're doing it correctly...
The ISP gives you a /64, and you advertise the entire /64 out to your subnet.
The man page for radvd.conf seems to suggest that you could use a "prefix ::/64 { ... }" instead of hard-coding the prefix in radvd.conf, but I've never tried this. You might also need a mechanism to assign an IPv6 address to eth0 (the LAN-side interface), if by default your IPv6 address gets assigned to ppp0.
Special prefix "::/64" is also supported on systems that implement getifaddrs() (on other systems, configuration activation fails and radvd exits). When configured, radvd picks one non-link-local prefix assigned to the interface and starts advertising it. This may be applicable in non-6to4 scenarios where the upstream prefix might change.
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brad
join:2007-09-06
Etobicoke, ON | reply to fluffybunny
said by fluffybunny :as per iana recommendations all isps give out a single /64. ra needs a full /64 to function. ipv6 is the only FAIL here.
IANA has its own policies for allocation of address space to the RIRs (ARIN, RIPE, APNIC) and THAT'S IT. The RIRs have policies for allocating address space to downstream networks (ISPs, hosting providers and so on).
ARIN's policy does not recommend a /64 but actually a /48 which is what has been recommended for IPv6 end site allocations all along by RFC3177.
2.15. Provider Assignment Unit (IPv6)
When applied to IPv6 policies, the term "provider assignment unit" shall mean the prefix of the smallest block a given ISP assigns to end sites (recommended /48).
RFC 6177 has revised that recommendation..
RFC 3177 [RFC3177] called for a default end site IPv6 assignment size
of /48. Subsequently, the Regional Internet Registries (RIRs)
developed and adopted IPv6 address assignment and allocation policies
consistent with the recommendations of RFC 3177 [RIR-IPV6]. In 2005,
the RIRs began discussing IPv6 address assignment policy again.
Since then, APNIC [APNIC-ENDSITE], ARIN [ARIN-ENDSITE], and RIPE
[RIPE-ENDSITE] have revised the end site assignment policy to
encourage the assignment of smaller (i.e., /56) blocks to end sites.
...
This document does, however, reaffirm an important assumption behind
RFC 3177:
A key principle for address management is that end sites always be
able to obtain a reasonable amount of address space for their
actual and planned usage, and over time ranges specified in years
rather than just months. In practice, that means at least one
/64, and in most cases significantly more. One particular
situation that must be avoided is having an end site feel
compelled to use IPv6-to-IPv6 Network Address Translation or other
burdensome address conservation techniques because it could not
get sufficient address space.
...
Hence, this document still recommends giving home sites significantly more
than a single /64, but does not recommend that every home site be given a
/48 either.
...
The above-mentioned goals of RFC 3177 can easily be met by giving
home users a default assignment of less than /48, such as a /56.
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 rodjamesPremium
join:2010-06-19
Gloucester, ON | reply to highwire2007
I've still yet to get my ipv6 working. My router config doesn't allow for /56 addresses :/
Time to flash opernwrt :P |
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brad
join:2007-09-06
Etobicoke, ON | reply to TSI Gabe
said by TSI Gabe:I just turned on IPv6 across the board in Vancouver for DSL.
Any reason TSI does not peer with Hurricane with either v4 or v6 at PIX-VAN? |
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| reply to fluffybunny
said by fluffybunny :ra needs a full /64 to function. There is no "requirement" for a whole /64, RA allows prefix length all the way to /127. The only problem with longer prefix (smaller subnet) is higher likelihood that devices may need multiple SLAAC retries to find an available address, which would be contrary to IPv6's goal of eliminating the need for NAT by providing each end-user plenty of IP space, hence the recommendation of a /64 minimum. If ISPs wanted to, they could do /96 IPv6 and most people would not notice anything if their IPv6 parameters are on automatic. |
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rodjamesPremium
join:2010-06-19
Gloucester, ON | reply to highwire2007
I am. |
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