Guest network functions (GNFs) over abstracted fabric interfaces

Guest network functions (GNFs) running Next Gen Services with the hardware support the following services over abstracted fabric interfaces: 

•  DNS filtering to identify DNS requests for blocklisted website domains. 
•  URL filtering to determine which Web content is not accessible to users. 

To support the services traffic over abstracted fabric interfaces, a GNF that has an Hardware assigned to it must also have a line card linked to it.