The meter's view of the current state of this NTP server. It may have one of the following values:
INVAL
: The server is invalid, e.g., because the hostname
could not be resolved to a network address or because the remote
server is not responding.
TRACK
: The server is being tracked and, if everything
continues to work fine, it will enter the PEER
state shortly.
PEER
: The server is a peer and could be used as a time source.
SYNC
: The server is a peer and the meter's time is
synchronized with this server.