Re: Review of draft-ietf-nextext-radius-pmip6

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Bernard,

Thank you for your review. See my comments inline.


On Jan 10, 2012, at 8:37 PM, Bernard Aboba wrote:

> The document appears to contain typos in sections 4.16 and 4.17.   
> 
> In section 4.16, it appears that "Home LMA IPv6 address" should be replaced by "Home DHCPv6 server address":

Blimey.. we'll fix this.

> 4.16.  PMIP6-Home-DHCP6-Server-Address
> 
> 
> 
>     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
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>    |      Type     |   Length      |  Home DHCPv6 server address
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>                      Home DHCPv6 server address
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>                      Home DHCPv6 server address
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>                      Home DHCPv6 server address
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>         Home LMA IPv6 address      |
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> In Section 4.17, it appears that "Visited LMA IPv6 address" should be replaced by "Visited DHCPv6 server address":

And the same here..


> 
> 4.17.  PMIP6-Visited-DHCP6-Server-Address
> 
> 
>     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
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>    |      Type     |   Length      | Visited DHCPv6 server address
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>                     Visited DHCPv6 server address
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>                     Visited DHCPv6 server address
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>                     Visited DHCPv6 server address
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>       Visited LMA IPv6 address     |
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> 
> 5.2.  Table of Attributes
> 
> 
>    The following table provides a guide to attributes that may be found
>    in authentication and authorization RADIUS messages between MAG and
>    the AAA Server.
> 
> 
> Request Accept Reject Challenge #  Attribute
> 
>    0-1     0-1    0-1    0-1      80  Message-Authenticator
> 
> 
> 
> [BA] The Message-Authenticator attribute is mandatory-to-implement in a number of 
> RADIUS usages, including EAP (RFC 3579).  Leaving out Message-Authenticator could 
> result in Access-Requests lacking authentication and
> integrity protection.  RFC 6158 Section 3.1 states:

Good point. So, you are saying that we should have:

   1       0-1    0-1    0-1      80  Message-Authenticator

or would 

   1       1      1      1        80  Message-Authenticator

be even better as RFC3759 & 5090 do?


- Jouni



> 
>    While [RFC2865] did not require authentication and integrity
>    protection of RADIUS Access-Request packets, subsequent
>    authentication mechanism specifications, such as RADIUS/EAP [RFC3579]
>    and Digest Authentication [RFC5090], have mandated authentication and
>    integrity protection for certain RADIUS packets.  [RFC5080], Section
>    2.1.1 makes this behavior RECOMMENDED for all Access-Request packets,
>    including Access-Request packets performing authorization checks.  It
>    is expected that specifications for new RADIUS authentication
>    mechanisms will continue this practice.
> 
> 
>  
> 
> 
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