Re: [dhcwg] Re: WG last call on draft-ietf-dhc-dhcpv6-opt-dnsconfig-02.txt

[Ralph Droms <[e-mail]>]

Alain,

If it's unclear, then we should edit the document to explicitly identify 
the addresses as IPv6 addresses.

This option is intended to return IPv6 configuration information.  IPv4 
addresses for DNS resolvers should be provided through DHCPv4...

- Ralph

At 11:40 AM 2/20/2003 -0800, Alain Durand wrote:
> From a quick look at the draft:
>
>4. Domain Name Server option
>
>   The Domain Name Server option provides a list of one or more IP
>   addresses of DNS servers to which a client's DNS resolver MAY send
>   DNS queries [2].  The DNS servers are listed in the order of
>   preference for use by the client resolver.
>
>   The format of the Domain Name Server option is:
>
>
>       0                   1                   2                   3
>       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>      |      OPTION_DNS_SERVERS       |         option-len            |
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>      |                                                               |
>      |                   DNS-server (IP address)                     |
>      |                                                               |
>      |                                                               |
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>      |                                                               |
>      |                   DNS-server (IP address)                     |
>      |                                                               |
>      |                                                               |
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>      |                              ...                              |
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>
>
>
>Are the IP addresses of the DNS servers IPv4 ones or IPv6 ones?
>How would the DHCP client knows?
> From the width of the boxes, one could think it it is v4 addresses,
>but from the height (4 lines!), one could think it is actually v6 addresses.
>
>My points are:
>- the spec is unclear if those addresses are v4 or v6
>- it may makes sense to actually mix both type in an announcement,
>   for example say: try this v6 address, if it does not work, try this v4 one.
>   Then each DNS server entry should have both the actual address and its 
> family.
>
>    - Alain.
>
>
>Ralph Droms wrote:
>
>>Reminder and note: there have been a few responses to this WG last call, 
>>but no explicit positive recommendations for advancement.
>>Please review draft-ietf-dhc-dhcpv6 opt-dnsconfig-02.txt and reply with 
>>comments.  If you recommend the document for advancement without 
>>revision, please respond with a quick acknowledgment.  No response will 
>>be interpreted as a lack of support for advancing the document.
>>
>>-----
>>
>>This message announces a WG last call on "DNS Configuration options for 
>>DHCPv6" <draft-ietf-dhc-dhcpv6 opt-dnsconfig-02.txt>.  The last call will 
>>conclude on Friday, 2/21.
>>
>>Note that this is a parallel WG last call in the dhc, ipv6 and dnsext WGs.
>>
>>draft-ietf-dhc-dhcpv6 opt-dnsconfig-02.txt describes two options for 
>>DHCPv6: the Domain Name Server option and the Domain Search List 
>>option.  This document is being considered for Proposed Standard as an 
>>extension to the base DHCPv6 specification, and is available as 
>>http://www.ietf.org/internet-drafts/draft-ietf-dhc-dhcpv6-opt-dnsconfig-02.txt
>>
>>- Ralph Droms
>>
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