Value,Name,Recommended,Reference 0x0000,RESERVED,-,[RFC9420] 0x0001,mls_public_message,Y,[RFC9420] 0x0002,mls_private_message,Y,[RFC9420] 0x0003,mls_welcome,Y,[RFC9420] 0x0004,mls_group_info,Y,[RFC9420] 0x0005,mls_key_package,Y,[RFC9420] 0x0006-0xEFFF,Unassigned,, 0xF000-0xFFFF,Reserved for Private Use,-,[RFC9420]