1. Understanding Internet Protocols Through Hands-On Programming ISBN:9780471356264
2.Network Routing Basics: Understanding IP Routing in Cisco Systems ISBN:9780471772736

_http://grok2.tripod.com/structure_packing.html
  _http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/com.ibm.xlcpp101.cell.doc/compiler_ref/pragma_pack.html


http://www.perlmonks.org/?node_id=102347

Library: 0028592590

GNU/Linux Application Programming, Second Edition  
 
Perl Black Book, Second Edition 
by Steven Holzner  
Paraglyph Press © 2001 (1259 pages) Citation 
ISBN:9781932111101 

 
by M. Tim Jones  
Cengage Course Technology © 2008 (688 pages) Citation 
ISBN:9781584505686