Attributes supported in RADIUS server tracking

Following are the attributes supported in RADIUS server tracking:

| Attribute name        | Tx | Rx | Notes        |
|-----------------------|----|----|--------------|
| User-name             | Y  | N  | RFC2865      |
| NAS-IP-Address        | Y  | N  | RFC2865      |
| NAS-Identifier        | Y  | N  | RFC2865      |
| NAS-Ipv6-Address      | Y  | N  | RFC3162      |
| Chap-Challenge        | Y  | N  | RFC2865      |
| Chap-Password         | Y  | N  | RFC2865      |
| User-Password         | Y  | N  | RFC2865      |