v11: iRules Data Group Updates
Updated Oct 02, 2023
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Yes, remove the $:: prefix from the data group name: 
 
https://clouddocs.f5.com/api/irules/class.html 
 
Note that you should not use a $:: or :: prefix on the datagroup name when using the class command (or in any datagroup reference on 9.4.4 or later). 
 
In v9.4.4 - 10, using $::datagroup_name will work but demote the virtual server from running on all TMMs. For details, see the CMP compatibility page. 
 
In v11, using $::datagroup_name will result in a TCL runtime error and a reset being sent to the client!