privacy header format - RFC 3323

Am looking for some clarification about the definition  of
Privacy-hdr
(from RFC 3323):

    Privacy-hdr  =  "Privacy" HCOLON priv-value
*(";" priv-value)
    priv-value   =   "header" /
"session" / "user" /
"none" / "critical"
                     / token

I am not clear about ";" above given the header
defns in RFC 3261.  I would
have thought it should be a COMMA. I maybe missing
something.

I did come across a mail that specifically talks about this:
(
http://www.atm.tut.fi/list-archive/sip/msg05124.html)

"
> Privacy-hdr  =  "Privacy" HCOLON priv-value
*(COMMA priv-value)
>    priv-value   =   "header" |
"session" | "user" |
"none" | "critical" | token

I would strongly advise that you also allow for semi-colon
separated
parameters for the purposes of future extensibility.

Also, you need to use slashes "/" to separate
or-values, not vertical
bars "|".
"

but am not sure the comment actually resulted in the change
from COMMA to
SEMI.

thanks,

-venu

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