[Softwires] 6rd RADIUS attribute - grouped attributes

[Stefan Winter <[e-mail]>]

Hello softwires,

this is to let you know of recent developments in the radext working
group: there's a draft draft-ietf-radext-radius-extensions (-02) that
describes new attribute formats.

Among them is a data type "TLV" which is container for sub-attributes.

Looking at the 6rd-radius-attributes draft, I read the statement in 4.1:
  "Given that RADIUS currently has no
   recommended way of grouping multiple attributes, the below design
   appears to be a reasonable compromise."

See http://tools.ietf.org/html/draft-ietf-radext-radius-extensions-02

The radius-extensions document already had a WGLC (currently resolving
comments). You might want to reconsider your usage of a complex
attribute encoding and use a (cleaner) TLV-with-subattributes approach
instead.

You should consider it especially because an existing BCP RFC makes
clear that complex attribute encodings shouldn't be used if a viable
alternative exists (RFC6158).

Greetings,

Stefan Winter