Impact of the change on users:
Only one DNS server will be upgraded at any given time. Each server upgrade may last from less than a minute (caching servers) to several minutes (primary and secondary servers). Properly configured DNS clients with multiple DNS servers defined should continue to operate normally. Production DNS servers will be upgraded at night, early morning, or on the weekend to minimize any possible impact.
Reason for the change:
ITS is applying BIND security updates to the IPAM DNS servers. (ID # 248883)