Flag,Name,Reference
0x01,Global Label,[RFC3209]
0x02,TE Link Label,"[RFC8577, Section 9.3]"
0x04,Delegation Label,"[RFC8577, Section 9.5]"
0x08,Unassigned,
0x10,Unassigned,
0x20,Unassigned,
0x40,Unassigned,
0x80,Unassigned,