Samplicator - Send copies of (UDP) datagrams to multiple receivers, with optional sampling and spoofing

INSTALLATION
This distribution uses GNU configure for portability and flexibility of installation. You must configure the program for your system before you can compile it using make:

$ ./configure
$ make

The program can then be installed (under /usr/local/bin by default) using "make install":

$ make install

The configure script accepts many arguments, some of which may even be useful. Using "./configure --prefix ..." you can specify a directory other than /usr/local to be used as an installation destination. Call "./configure --help" to get a list of arguments accepted by configure.

USAGE
The usage convention for the program is

$ samplicate [<option>...] [<destination>...]

Where each <option> can be one of

-d <level> to set the debugging level
-s <address> to set interface address on which to listen
  for incoming packets (default any)
-p <port> to set the UDP port on which to listen for
  incoming packets (default 2000)
-b <buflen> size of receive buffer (default 65536)
-c <configfile> specify a config file to read
-x <delay> to specify a transmission delay after each packet,
     in units of microseconds
-S  maintain (spoof) source addresses
-n  don't compute UDP checksum (only relevant with -S)
-f  fork program into background
-m <pidfile> write the process ID to a file
-4  IPv4 only
-6  IPv6 only
-h  to print a usage message and exit
-u <pdulen> size of max pdu on listened socket (default 65536)

and each <destination> should be specified as <addr>[/<port>[/<interval>[,ttl]]], where

<addr>  IP address of the receiver
<port>  port UDP number of the receiver (default 2000)
<freq>  number of received datagrams between successive
  copied datagrams for this receiver.
<ttl>  The TTL (IPv4) or hop-limit (IPv6) for
  outgoing datagrams.

Config file format:

a.b.c.d[/e.f.g.h]: receiver ...

where:

a.b.c.d     is the sender's IP address
e.f.g.h     is a mask to apply to the sender (default 255.255.255.255)
receiver    see above.

Receivers specified on the command line will get all packets, those specified in the config-file will get only packets with a matching source.