This is something we encountered as well in the preliminary stages of setting up our Aruba WLAN. Here is what we discovered with 105's and 135's. Our current setup is so that if any ArubaAP is connected to our network, it will find the Master via the VRRP ip address and not "aruba-master" dns entry. We are running INFOBLOX v. 6.5.9-202641
Under the Data Management Tab select DHCP
Go to IPv4 Filters
Create a new "IPv4 Option Filter" <--Ours is labeled "ArubaAP". When you are creating the new filter, if you want this to be global then keep the "apply this filter as a global DHCP class" checked. If not and you want to apply it only to specific ranges, UNCHECK this box.
Click Next
For the Rule use "vendor-class-identifier (60) string" = "ArubaAP" <--- no quotations
Click Next
For the Option Space select your primary DHCP from the drop down (this may just display as DHCP in the drop down)
Then Click the Add button.
For the OPTION NAME column select "vendor-encapsulated-options (43) string" then set the value column to your desired
controller or VRRP IP address x.x.x.x
In addition to this we noticed that we also had to RETURN THE OPTION 60 back to the AP by adding another Option beneath
this one.
It will be identical to the rule so click ADD then under option space select "vendor-class-identifier (60) string" and for the value
type in "ArubaAP" <--- no quotations
Click Next
Click Save & Close
If you left this option set in the beginning as a GLOBAL filter, it will apply to all your DHCP ranges. If not, All you need to do now is apply it to the appropriate range where you will be deploying your Aruba AP's.
This is working currently in our network and we have more than one WLAN vendor with 3 different Option 60 and 43 filters all working. Our other vendors 60 & 43 options did not require 60 on the return, so discovering the need for it on Aruba was quite the task.