• address_reply : icmp_header
• address_request : icmp_header
• destination_unreachable : icmp_header
• echo_reply : icmp_header
• echo_request : icmp_header
• info_reply : icmp_header
• info_request : icmp_header
• parameter_problem : icmp_header
• redirect : icmp_header
• source_quench : icmp_header
• time_exceeded : icmp_header
• timestamp_reply : icmp_header
• timestamp_request : icmp_header