I have a AFF system running OnTap 9.3P1 and am seeing a strange issue. If we have a DNS entry for the cluster mgmt interface ,that contains an "_" character, I recieve the following error when trying to load the System Manager interface.
Bad Request Your browser sent a request that this server could not understand. Additionally, a 400 Bad Request error was encountered while trying to use an ErrorDocument to handle the request.
If I go to the IP address or a DNS entry that doesn't contain an _ I can logon as normal.