Hello Alan,

I changed the script, as per your indication to return MODULE_UPDATED rather than OK and get the following:

rlm_perl: Added pair NAS-Port-Type = Ethernet
rlm_perl: Added pair Service-Type = Framed-User
rlm_perl: Added pair Calling-Station-Id = 00-15-C5-02-39-99
rlm_perl: Added pair Called-Station-Id = 00-13-19-EE-6F-11
rlm_perl: Added pair Message-Authenticator = 0x9872e1eeab813716543608de832829a6
rlm_perl: Added pair User-Name = nint\\raduser
rlm_perl: Added pair EAP-Message = 0x02020011014e494e545c72616475736572
rlm_perl: Added pair NAS-IP-Address = 10.0.1.9
rlm_perl: Added pair NAS-Port = 50117
rlm_perl: Added pair Framed-MTU = 1500
perl_pool total/active/spare [32/0/32]
Unreserve perl at address 0x17c12a0
++[perl] returns updated
++[chap] returns noop
++[mschap] returns noop
    rlm_realm: No '@' in User-Name = "nint\ aduserr", looking up realm NULL
    rlm_realm: No such realm "NULL"

thoughts on where to go from here to get this not to alter the username and just lc it

Thanks