Value,ID Role,Reference
0,Reserved,[RFC6043]
1,Initiator (IDRi),[RFC6043]
2,Responder (IDRr),[RFC6043]
3,KMS (IDRkms),[RFC6043]
4,Pre-Shared Key (IDRpsk),[RFC6043]
5,Application (IDRapp),[RFC6043]
6,Initiator's KMS (IDRkmsi),[RFC6509]
7,Responder's KMS (IDRkmsr),[RFC6509]
8,Hashed Initiator (IDRuidi),"[3GPP TS 33.180, Section E.6.7][Tim_Woodward]"
9,Hashed Responder (IDRuidr),"[3GPP TS 33.180, Section E.6.7][Tim_Woodward]"
10-239,Unassigned,
240-254,Reserved for Private Use,[RFC6043]
255,Reserved,[RFC6043]