The object is used to set the ICMP code of control message Description Type Code echo-reply 0 0 net-unreachable 3 0 host-unreachable 3 1 protocol-unreachable 3 2 port-unreachable 3 3 packet-too-big 3 4 source-route-failed 3 5 network-unknown 3 6 host-unknown 3 7 host-isolated 3 8 dod-net-prohibited 3 9 dod-host-prohibited 3 10 net-tos-unreachable 3 11 host-tos-unreachable 3 12 administratively-prohibited 3 13 host-precedence-unreachable 3 14 precedence-unreachable 3 15 source-quench 4 0 net-redirect 5 0 host-redirect 5 1 net-tos-redirect 5 2 host-tos-redirect 5 3 alternate-address 6 -1 echo 8 0 router-advertisement 9 0 router-solicitation 10 0 time-exceeded 11 -1 ttl-exceeded 11 0 reassembly-timeout 11 1 parameter-problem 12 -1 no-room-for-option 12 0 option-missing 12 1 timestamp-request 13 0 timestamp-reply 14 0 information-request 15 0 information-reply 16 0 mask-request 17 0 mask-reply 18 0 traceroute 30 -1 conversion-error 31 -1 mobile-redirect 32 -1