I'm performing the installation of a secondary ZD1100 for a client tomorrow and will obviously come across the same issue. They also use Microsoft NPS for 802.11 certificate based authentication so I would have thought I will need to take this in to consideration too.
I've looked on the forums and documentation and can't find anything that can help.
Hey guys here's what I did on my 1100's cause I had the same issue when I went live with 9.4.?
I configured Smart Redundancy
Then also under Configure>System I set "Management Interface" to enable IPv4 Management Interface. I set a static IP address for my network along with the rest of the configuration (netmask, gateway, vlan).
Then I made a static DNS entry on my DNS server to be zonedirector.domainname to the static IP address I entered for the management interface.
That way when a Smart Redundancy event occurs everything continues to work with a brief few minute outage while the standby ZD takes over.
For what it's worth I named my ZD's ZDPrimary & ZDSecondary. But all my name resolution is going to zonedirector.domainname.xxx.