<Tr> <Th> 10 </Th> <Td> The destination host is administratively prohibited . </Td> </Tr> <Tr> <Th> 11 </Th> <Td> The network is unreachable for Type Of Service . </Td> </Tr> <Tr> <Th> 12 </Th> <Td> The host is unreachable for Type Of Service . </Td> </Tr> <Tr> <Th> 13 </Th> <Td> Communication administratively prohibited (administrative filtering prevents packet from being forwarded). </Td> </Tr>

Icmp type 8 packets are timestamp reply packets