iRule error after upgrade version (Operation not supported. Multiple redirect/respond invocations not allowed)

Assuming all your iRules are the same as your sample, replace

return

with

event disable

function in all iRules that invoke redirects or responses. The return function is not needed here. The event disable function should be called after each redirect or response statement, unless you merge the iRules together so that this particular TCL error can no longer occur. By doing so, you may also want to look into iRule execution priorities to make sure no important functionality is superseded.

https://devcentral.f5.com/questions/stop-processing-irule-s-if-condition-is-met