collectd/collectd — pull request #151 by ion1 (2012-10-08 16:47:57+00:00)
Title: src/ntpd.c: Write NAN if the peer was not reachable

If ntpd failed to reach a peer, it will return out-of-date offset/dispersion/delay values as well as the information that the peer wasn’t reached. In that case submit NAN instead of out-of-date values.