help with interface type

[diamond669]

Hello to all .

can someone please explain or point to relevent data about this interface and its uses  

thank you very much .

[akristof · Accepted solution]

Hello,

Thank you for feedback. It is related to NAT64/NAT46:

https://docs.fortinet.com/document/fortigate/7.0.0/new-features/157495/simplify-nat46-and-nat64-poli...

"Multiple NAT46 and NAT64 related objects are consolidated into regular objects. A new per-VDOM virtual interface, naf.<vdom>, is automatically added to process NAT46/NAT64 traffic. The new changes and additions include"

[diamond669]

 thank you very much .