After applying the mitigation steps, the vulnerability still exists. 

1. In Citrix ADC and Citrix Gateway Release 12.1 build 50.28, an issue exists that affects responder and rewrite policies causing them to not process the packets that matched policy rules. Citrix recommends that customers update to the 12.1 build 50.28/50.31 or later for the mitigation steps to function as intended.
2. Review the workaround steps and ensure save config is applied, especially before the reboot.