IANA has allocated GENEVE option class 0x0162 for nat64.net. Below you will find a table of option types allocted from within this option class.

Option type Name Specification Example implementation
0x80 NAT64 bypass spec
0x01 - 0x7f Reserved non-critical
0x80 GENEVE through NAT64 spec Endpoint PoC
0x81 Audit mirror spec
0x82 - 0xff Reserved critical