Name of the nspbr6.

Indicates that protocol will be reverted or reset to the default value.
Possible Values : ICMPV6, TCP, UDP, ICMP, IGMP, EGP, IGP, ARGUS, RDP, RSVP, EIGRP, L2TP, ISIS, GGP, IPoverIP, ST, CBT, BBN-RCC-M, NVP-II, PUP, EMCON, XNET, CHAOS, MUX, DCN-MEAS, HMP, PRM, XNS-IDP, TRUNK-1, TRUNK-2, LEAF-1, LEAF-2, IRTP, ISO-TP4, NETBLT, MFE-NSP, MERIT-INP, SEP, 3PC, IDPR, XTP, DDP, IDPR-CMTP, TP++, IL, IPv6, SDRP, IPv6-Route, IPv6-Frag, IDRP, GRE, MHRP, BNA, ESP, AH, I-NLSP, SWIPE, NARP, MOBILE, TLSP, SKIP, IPv6-NoNx, IPv6-Opts, Any-Host-Internal-Protocol, CFTP, Any-Local-Network, SAT-EXPAK, KRYPTOLAN, RVD, IPPC, Any-Distributed-File-System, TFTP, VISA, IPCV, CPNX, CPHB, WSN, PVP, BR-SAT-MO, SUN-ND, WB-MON, WB-EXPAK, ISO-IP, VMTP, SECURE-VM, VINES, TTP, NSFNET-IG, DGP, TCF, OSPFIGP, Sprite-RP, LARP, MTP, AX.25, IPIP, MICP, SCC-SP, ETHERIP, Any-Private-Encryption-Scheme, GMTP, IFMP, PNNI, PIM, ARIS, SCPS, QNX, A/N, IPComp, SNP, Compaq-Pe, IPX-in-IP, VRRP, PGM, Any-0-Hop-Protocol, ENCAP, DDX, IATP, STP, SRP, UTI, SMP, SM, PTP, FIRE, CRTP, CRUDP, SSCOPMCE, IPLT, SPS, PIPE, SCTP, FC, RSVP-E2E-IGNORE, Mobility-Header, UDPLite.