attr_rewrite question

[Norbert Wegener]

I am using FreeRADIUS Version 1.1.0 on a Suse10.1 system and want to 
rewrite the User-name in that way, that all ":" in that name are 
dropped, before fr looks into the users file.

In analogy to sanecallerid in radiusd.conf I setup

     attr_rewrite saneusername {
                attribute = User-Name
                # may be "packet", "reply", "proxy", "proxy_reply" or 
"config"
                searchin = packet
                searchfor = "[:]"
                replacewith = ""
                ignore_case = no
                new_attribute = no
                max_matches = 10
                ## If set to yes then the replace string will be 
appended to the original string
                append = no
        }


Running
radtest  12:34:567890123 1234567890123 lnxt2 0 maxen
Sending Access-Request of id 114 to 149.246.222.70 port 1812
        User-Name = "12:34:567890123"
        User-Password = "1234567890123"
        NAS-IP-Address = 255.255.255.255
        NAS-Port = 0
rad_recv: Access-Reject packet from host 149.246.222.70:1812, id=114, 
length=20



radiusd -AX shows:
...
Ready to process requests.
rad_recv: Access-Request packet from host 149.246.133.44:32791, id=46, 
length=66
        User-Name = "12:34:567890123"
        User-Password = "1234567890123"
        NAS-IP-Address = 255.255.255.255
        NAS-Port = 0

What am I doing wrong?
Thanks
Norbert Wegener