On Wed, 1 Oct 2008, Alexandru Petrescu wrote:
[EMAIL PROTECTED] wrote:
In a typical IPv6 ADSL household landscape...
An ADSL IPv6 operational deployment offers a /64 prefix at home.
With that, I can't subnet _and_ use IPv6 stateless auto-configuration.
In a typical IPv6 ADSL household landscape the ISP will assign you a
/48 with plenty of subnetting space.
Not sure, FWIW, in the IPv6 ADSL household I live in gives me a /64 and not
/48 (see draft-despres-v6ops-6rd-ipv6-rapid-deployment-01.txt).
That's typical for me but I don't know about the other deployed IPv6 ADSL, do
they give /64 or shorter prefixes?
The draft-despres-v6ops-6rd-ipv6-rapid-deployment-01.txt is largely
irrelevant in this discussion, This draft describing a particular solution
that can be implemented by the ISPs if:
1. they have complete operational control over the CPEs installed users
2. They want to implement IPv6 quickly
3. They users are using only one subnets which is the allocated /64.
In general - my recommendation when I giving tutorials about IPv6:
- /48 to /128 is delegated to end users
- /48 general case, /47 if justified for bigger networks
- /64 if one and only one network is required
- /128 if it is sure that one and only one device is going to be connected
between /48 - /64 up to you if you are cautious about address conservation:
- but use nibble boundary for easier reverse DNS delegation.
Regards,
Janos Mohacsi:
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