The interface state reflects the state of the current session. 0: PPPoEInitialize(0) 1: PPPoEDiscoveryInitiation(1) 2: PPPoEDiscoveryOffer(2) 3: PPPoEDiscoveryRequest(3) 4: PPPoEDiscoverySessionConfirmation(4) 5: PPPoEDiscoveryClientTerminate(5) 6: PPPoEDiscoveryServerTerminate(6) 7: PPPoET1Expired(7) 8: PPPoET2Expired(8) 9: IPoEInitialize(9) 10: IPoEDHCPv6Invalid(10) 11: IPoEDHCPDiscover(11) 12: IPoEDHCPOffer(12) 13: IPoEDHCPRequest(13) 14: IPoEDHCPAck(14) 15: IPoEDHCPNak(15) 16: IPoEDHCPDecline(16) 17: IPoEDHCPRenew(17) 18: IPoEDHCPRelease(18) 19: IPoEDHCPInform(19) 20: IPoEDHCPv6Solicit(20) 21: IPoEDHCPv6Advertise(21) 22: IPoEDHCPv6Request(22) 23: IPoEDHCPv6Authorized(23) 24: IPoEDHCPv6InformationRequest(24) 25: IPoEDHCPv6Rebind(25) 26: IPoEDHCPv6Renew(26) 27: IPoEDHCPv6Release(27) 28: PPPoAInitialize(28) 29: PPPoALCPConfigureRequest(29) 30: PPPoAPPoEPADISent(30) 31: PPPoAPPoEPADOReceived(31) 32: PPPoAPPoEPADRSent(32) 33: PPPoAPPoEPADSReceived(33) 34: PPPoAPPoEPADTReceived(34) 35: PPPoAPPoEPADTSent(35) 36: PPPoALCPReceived(36) 37: PPPoALCPConfirmation(37) 38: IEEE8021xInitialize(38) 39: IEEE8021xPending(39) 40: IEEE8021xAuthorized(40) 41: IPv6LinkLocal(41)