HP ProCurve NAC 800 User Manual page 212

End-user Access
Test Methods Used
NOTE:
5-4
_naces1
■
■ _naces2
If no contact can be made, try the following A names:
The endpoints DNS suffix must be correctly configured for your domain for
the Agent Callback feature to work correctly.
nac
■
■ naces1
naces2
■
See the following links for more information about DNS record types:
http://www.ietf.org/IESG/Implementations/RFC1886-Implementation/
DNSrecords.html