Add -4 and -6 options to flashproxy-client and flashproxy-reg-http
-6 options; if you're dual-stack, and you've configured IPv4 port forwarding,
flashproxy-reg-email may connect to the SMTP server over IPv6 and register your IPv6 address, leading to confusion.
flashproxy-client should understand
-6 and pass them to registration helpers that understand them.
flashproxy-reg-http should use the same socket trick that