 0=Echo Reply 
 3=Destination Unreachable 
 4=Source Quench 
 5=Redirect 
 6=Alternate Host Address
 8=Echo Request 
 9=Router Advertisement 
 10=Router Selection 
 11=Time Exceeded for Datagram 
 12=Parameter Problem on Datagram 
 13=Timestamp Request 
 14=Timestamp Reply 
 15=Information Request 
 16=Information Reply 
 17=Address Mask Request 
 18=Address Mask Reply
 30=Traceroute
 31=Datagram Conversion Error
 32=Mobile Host Redirect
 33=IPv6 Where-Are-You
 34=IPv6 I-Am-Here
 35=Mobile Registration Request
 36=Mobile Registration Reply
 37=Domain Name Request
 38=Domain Name Reply
 39=SKIP
 40=Photuris
