Please help me understand the changes in dictionary.rfc4679

[Daniel Finger]

Hi!

I am a bit confused about the dictionary.rfc4679
There are 2 entries (ADSL-Agent-Remote-Id and ADSL-Agent-Circuit-Id), that 
were changed from string to octets:
https://github.com/FreeRADIUS/freeradius-server/commit/0838f3d58a56f63f715156cea110426e6e514f45#diff-d50b31ca7578df0305cc37e831799353

The RFC states:
The format of the value field is one of 2 data types, string or integer 
[RFC2865] (from: https://tools.ietf.org/html/rfc4679#section-3.2)

Can you help me understand why this is octet and not string.

Greetings,
Daniel Finger