ICMP Message Code value. Used in combination with ICMP Message Type to setup an ICMP filter. This object is not used with any other protocol. 0 means ignored. The supported values are Type: Echo reply 1 = Echo reply Type: Destination unreachable 1 = Network unreachable 2 = Host unreachable 3 = Protocol unreachable 4 = Port unreachable 5 = Fragmentation needed by don't fragment bit set 6 = Source route failed 7 = Destination network unknown 8 = Destination host unknown 9 = Source host isolated 10 = Destination network administratively prohibited 11 = Destination host administratively prohibited 12 = Network unreachable for TOS 13 = Host unreachable for TOS 14 = Communication administratively prohibited by filter 15 = Host precedence violation 16 = Precedence cutoff in effect Type: Source quench 1 = Source quench Type: Redirect 1 = Redirect for network 2 = Redirect for host 3 = Redirect for TOS and network 4 = Redirect for TOS and host Type: Echo request 1 = Echo request Type: Router advertisement 1 = Router advertisement Type: Router solicitation 1 = Router solicitation Type: Time exceeded 1 = Time to live equals 0 during transmit 2 = Time to live equals 0 during reassembly Type: Parameter problem 1 = IP header bad (catchall error) 2 = Required option missing Type: Timestamp request 1 = Timestamp request Type: Timestamp reply 1 = Timestamp reply Type: Information request 1 = Information request Type: Information reply 1 = Information reply Type: Address mask request 1 = Address mask request Type: Address mask reply 1 = Address mask reply