This version changes the command line syntax! You are going to have to change how you call redir in order to upgrade.

Changes

• Convert SRC:PORT and DST:PORT from options to arguments, using a UNIX syntax that is pretty much standard by now.
• Rename -n,--name=STR --> -I,--ident=NAME
• Simplify argument parsing, move more data to global variables
• Simplify debug() statements, use syslog()
• Daemonize by default, like a proper UNIX daemon, unless -n, --foreground is given
• Replace perror() and other log messages going to stderr in favor of syslog() for everything, unless running in foreground, in which case we use LOG_PERROR for log message output to stderr as well ... unless -s, --syslog is given
• Replace -d, --debug with -l, --loglevel=LEVEL to control the syslog() default log level. The default log level is