Thank you. Does it mean one attribute can exist (as both or in both) radcheck/radreply tables? Like for example, NAS-Port-Type?

The reason I asked is because dialupadmin segregates the attribute to a check/reply attribute.
Then I happen to check NAS-Port-Type, the RFC says below... Does it mean access-request = check attribute? Sorry if this is another wrong question. Just want to clarify.
It is only used in
Access-Request packets.

thanks!
det

From: Alan DeKok <aland@deployingradius.com>
To: Det Det <det.explorer@yahoo.com>; FreeRadius users mailing list <freeradius-users@lists.freeradius.org>
Sent: Thursday, October 13, 2011 2:12 PM
Subject: Re: How to Determine Whether an Attribute is a Check Item or Reply Item

Det Det wrote:
> how to find out whether the attribute is a check/reply attribute?

  Read the documentation for the module.  *It* is the one which decided
which attributes go where.

  So it's wrong to ask if an *attribute* is a check/reply attribute.
Attributes are (mostly) just attributes.  They're not check or reply.

  Alan DeKok.