[Help-gnu-radius] Is $ a reserved character in User-Name?

[Carlson Per]

Hi.

Is $ a reserved character that can't be used in User-Name?

I'm trying to authenticate users trying to enter 'enable-mode' on a 
Cisco-router using 'aaa authenticate enable default radius'. The User-Name 
sent from the router to the Radius is then $enab15$. When adding this entry 
to the raddb/users file, it won't parse.

raddb/users:
$enab15$ Service-Type = Administrative-User,   <- This is the 5th line
                User-Password = "enable"
        NULL

radius# radiusd -mt
Jul 30 16:11:18 Main.info: Starting
Jul 30 16:11:18 Main.info: Terminating the subprocesses
Jul 30 16:11:18 Main.info: Loading configuration files.
Jul 30 16:11:18 Main.info: reading /usr/local/etc/raddb/config
Jul 30 16:11:18 Main.error: /usr/local/etc/raddb/users:5: parse error
Jul 30 16:11:18 Main.error: discarding user `User-Password'
Jul 30 16:11:18 Main.info: /usr/local/etc/raddb/users reloaded.
Jul 30 16:11:18 Main.info: Ready

but when removing the $-characters from the User-Name, it parses
perfectly:

enab15 Service-Type = Administrative-User,
                User-Password = "enable"
        NULL

radius# radiusd -mt
Jul 30 16:16:33 Main.info: Starting
Jul 30 16:16:33 Main.info: Terminating the subprocesses
Jul 30 16:16:33 Main.info: Loading configuration files.
Jul 30 16:16:33 Main.info: reading /usr/local/etc/raddb/config
Jul 30 16:16:33 Main.info: /usr/local/etc/raddb/users reloaded.
Jul 30 16:16:33 Main.info: Ready

I'm running GNU-Radius v1.2 on FreeBSD 4.7-RELEASE

Per