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Full Discussion: IPv4 LSRR Option
Top Forums Programming IPv4 LSRR Option Post 302198646 by ramen_noodle on Friday 23rd of May 2008 11:25:10 AM
Old 05-23-2008
Based on your posts you would probably benefit from reading all of Stevens Unix Network programming. This is a seminal and still mostly authoritative work.

For a udp dgram packet to be sent to more than one host on LAN with the same
subnet involved use multicast. Otherwise you could possibly use host routes, or tunneling, and obviously
unicast median destination hosts must be able to forward packets if the end host is based on a host route.

For other options in the IP packet you may want to look at the IP_HDRINCL option and/or RAW sockets.

Example here:
Scout Module API | PlanetLab
 

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LEARN ABOUT DEBIAN

ipv6loganon

ipv6loganon(8)															    ipv6loganon(8)

NAME

       ipv6loganon - HTTP server log file anonymizer

SYNOPSIS

       ipv6loganon [ -d value ] [ -V ] [ -n ] [ -c value ] [ --mask-ipv4 bits ] [ --no-mask-iid ] [ --anonymize-standard ]

DESCRIPTION

       ipv6loganon is a HTTP server log file anonymizer

       It expects a log line on stdin with an IPv4/IPv6 address as first token.

       This token would be anonymized according to given/default options.

       The anonymizer would keep as much information as possible for IPv6 address types.

       Client-side IID would be anonymized by

	      o EUI-48 based: serial number would be zero'ed, keeping OID

	      o EUI-64 based: serial number would be zero'ed, keeping OID

	      o ISATAP: client IPv4 address would be anonymized by given IPv4 mask

	      o TEREDO: client IPv4 address would be anonymized by given IPv4 mask, client port would be zero'ed

	      o 6to4(Microsoft): client IPv4 address would be anonymized by given IPv4 mask

	      o local: whole IID would be zero'ed

       Client-side SLA would be anonymized by

	      o SLA would be zero'ed

       Prefix would be anonymized by

	      o 6to4: client IPv4 address would be anonymized by given IPv4 mask

       Compat/Mapped IPv4 addresses would be anonymized by

	      o IPv4 address would be anonymized by given IPv4 mask

       Afterwards, the modified address and the trailing line would be printed to stdout.

OPTIONS

   GENERAL
       -d, --debug <debug value>
	      debug value (bitwise like)

       -V, --verbose
	      be verbose

       -n, --nocache
	      disable caching

       -c, --cachelimit
	      set cache limit (default: 20, maximum: 200)

   OUTPUT ANONYMIZATION
       --mask-ipv4 <bits>
	      mask all IPv4 addresses [0-32], default 8 even if occurs in IPv6-IID

       --no-mask-iid
	      do not mask non-IPv4 based IPv6-IID

       --anonymize-standard
	      preset for standard anonymization

       Default settings: mask-ipv4=8 mask-iid

EXAMPLE

       Original lines (stdin):

       207.46.98.53    -    -	 [01/Jan/2007:00:01:15	 +0100]   "GET	 /Linux+IPv6-HOWTO/x1112.html	HTTP/1.0"   200   6162	 "-"   "msnbot/1.0
       (+http://search.msn.com/msnbot.htm)" 253 6334

       2002:52b6:6b01:1:216:17ff:fe01:2345    -    -	 [10/Jan/2007:15:04:28	   +0100]     "GET     /favicon.ico	HTTP/1.1"     200     4710
       "http://www.bieringer.de/linux/IPv6/"  "Mozilla/5.0  (X11;  U;  Linux  i686;  en-US;  rv:1.8.0.9) Gecko/20061219 Fedora/1.5.0.9-1.fc6 Fire-
       fox/1.5.0.9 pango-text" 413 5005

       Modified lines (stdout):

       207.46.98.0   -	 -   [01/Jan/2007:00:01:15   +0100]   "GET   /Linux+IPv6-HOWTO/x1112.html   HTTP/1.0"	 200	6162	"-"    "msnbot/1.0
       (+http://search.msn.com/msnbot.htm)" 253 6334

       2002:52b6:6b00:0:216:17ff:fe00:0      -	   -	 [10/Jan/2007:15:04:28	   +0100]     "GET     /favicon.ico	HTTP/1.1"     200     4710
       "http://www.bieringer.de/linux/IPv6/" "Mozilla/5.0 (X11; U;  Linux  i686;  en-US;  rv:1.8.0.9)  Gecko/20061219  Fedora/1.5.0.9-1.fc6  Fire-
       fox/1.5.0.9 pango-text" 413 5005

AUTHORS

       Peter Bieringer <pb@bieringer.de>

SEE ALSO

       ipv6calc(8)

Niko Tyni <;ntyni@iki.fi>					    2007-02-01							    ipv6loganon(8)
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