v1.2.1

1. Provided static executable, updated debian package category to net.

Created release 1.2.0

1. Omar Tariq (aka OmarTariq612): using send() instead of sendto()
2. Andrew Aladjev [email protected]: enabled IPV6_V6ONLY option for tcp IPv6 bind logic, net.ipv6.bindv6only 0 is supported now