Re: [dhcwg] draft-ietf-dhc-dhcpv6-opt-nisconfig-05.txt

Solution 1 seems more logical to me.. I support solution 1

Vijay

Ralph Droms wrote:

> The IESG has one remaining comment on this draft (see 
> https://datatracker.ietf.org/public/pidtracker.cgi?command=print_ballot&ballot_id=896&filename=draft-ietf-dhc-dhcpv6-opt-nisconfig): 
>
>
>   what does a DHCPv6 server do when it wants to indicate that there's 
> a NIS
>   server available with an IPv4 address and another NIS server 
> available with
>   an IPv6 address?
>
>   The two reasons why this can be a silly question:
>
>   - NIS wouldn't work with such a config, so all the servers' addresses
>     obviously have to be one address type
>   - You can always encode a v4 address as a v6 address using the 
> 96-zeroes
>     convention (or something else), so it's obvious how to do it
>
>   But I think the document should address the issue.
>
> We have a couple of alternatives to addressing the issue:
>
> 1. Reserve DHCPv6 for IPv6 NIS servers and DHCPv4 for IPv4 NIS servers
> 2. Wait until the WG completes its work on DHCPv4/DHCPv6 issues
> 3. Use an encoding to carry IPv4 addresses in the DHCPv6 option; for
>    example, Vijay suggests:
>
>    3. Network Information Service (NIS) Servers Option
>
>       The Network Information Service (NIS) Servers option provides a
>       list of one or more IPv6 addresses of NIS servers available to the
>       client. If any of the NIS servers is available with an IPv4 
> address,
>       then its address will be represented in "IPv4-mapped IPv6 
> address" [RFC3513]
>       format. Clients MUST treat the list of NIS servers as an ordered
>       list.  The server MAY list the NIS servers in the order of
>       preference.
>
> For the DHCPv6 DNS servers option, the WG opted for alternative 1, which
> seems to me to be the right thing to do for the NIS servers option, as 
> well.
>
> - Ralph
>
>
>
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>
>

-- 
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Vijayabhaskar A K            Phone : +91-80-22053085
Hewlett Packard              Mobile: +91-9845241382
Bangalore, India             Email : vijayak@india.hp.com

Intellectuals solve problems: geniuses prevent them.
-Albert Einstein, physicist, Nobel laureate (1879-1955)
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