Symptom
When authentication linux to radius using libpam-radius-auth: Sends out 127.0.0.1 as NAS-IP-Address
Cause
/etc/hosts file contains the local machine’s hostname with 127.0.0.1
Solution
Either remove the offending line, or before this line place the correct ip address with the hostname (note that order is important).
10.0.0.5 computerName
127.0.0.1 computerName