Some DNS lookups causing 5xx errors due to leap second bugOur operations team has deployed a fix globally and this incident has been resolved. At this time all traffic has been restored, and services are back to full operational capacity. Starting at 00:00 UTC on January 1, 2017, CNAME resolutions on some machines stopped working due to a bug triggered by the universal addition of one leap second, which affected both some authoritative DNS and origin DNS
