Sometimes, my ddclient goes into state, where it's constantly retrying to update ZoneEdit record, and never succeeds because of ZoneEdit's traffic threshhold policy.
ddclient logs repeatedly:
"FAILED: updating xxx.xxxxx.com: 702: Update failed: Too many updates too quickly, try again later.
I asked ZoneEdit customer support, and they've sent me this:
"If you have received a 702 error while attempting to update the zone records, this indicates you are exceeding traffic thresholds set by our system. You are only able to send 3 requests in a 10-second window, no more than 5 requests in an hour. If the threshold is exceeded the zone will be locked from updates for one hour. The zone will only be unlocked once no update requests have been sent for a full hour."
It seems ddclient doesn't obey the 5_per_hour rule.