Description: Transport protocol. Valid values for the IP protocol are: 0 = any IP protocol 1 = ICMP 2 = IGMP 3 = ggp 4 = ipencap 5 = st2 6 = TCP 7 = cbt 8 = egp 9 = igp 10 = bbn_rcc 11 = nvp 12 = pup 13 = argus 14 = emcon 15 = xnet 16 = chaos 17 = UDP 18 = mux 19 = dcn 20 = hmp 21 = prm 22 = xns_idp 23 = trunk1 24 = trunk2 25 = leaf1 26 = leaf2 27 = rdp 28 = irtp 29 = iso_tp4 30 = netblt 31 = mfe_nsp 32 = merit_inp 33 = sep 34 = threepc 35 = idpr 36 = xtp 37 = ddp 38 = idpr_cmtp 39 = tppp 40 = il 41 = ipv6 42 = sdrp 43 = ipv6_route 44 = ipv6_frag 45 = idrp 46 = rsvp 47 = gre 48 = mhrp 49 = bna 50 = esp 51 = ahp 52 = inlsp 53 = swipe 54 = narp 55 = mobile 56 = tlsp 57 = skip 58 = ipv6_icmp 59 = ipv6_nonxt 60 = ipv6_opts 62 = cftp 64 = sat_expak 65 = kryptolan 66 = rvd 67 = ippc 69 = sat_mon 70 = visa 71 = ipcv 72 = cpnx 73 = cphb 74 = wsn 75 = pvp 76 = br_sat_mon 77 = sun_nd 78 = wb_mon 79 = wb_expak 80 = iso_ip 81 = vmtp 82 = secure_vmtp 83 = vines 84 = ttp 85 = nsfnet_igp 86 = dgp 87 = tcf 88 = IGRP 89 = OSPF 90 = sprite_rpc 91 = larp 92 = mtp 93 = ax25 94 = ipip 95 = micp 96 = scc_sp 97 = etherip 98 = encap 100 = gmtp 101 = ifmp 102 = pnni 103 = pim 104 = aris 105 = scps 106 = qnx 107 = an 108 = ipcomp 109 = snp 110 = compaq_peer 111 = ipxinip 112 = vrrp 113 = pgm 115 = l2tp 116 = ddx 117 = iatp 118 = st 119 = srp 120 = uti 121 = smp 122 = sm 123 = ptp 124 = isis 125 = fire 126 = crtp 127 = crdup 128 = sscopmce 129 = iplt 130 = sps 131 = pipe 132 = sctp 133 = fc 134 = rsvp_e2e_ignore 135 = mobility_header 136 = udplite 137 = mpls_in_ip 138 = manet 139 = hip 140 = shim6 254 = divert