Home brew version of netcat does not support -U

[kjeldahl]

I had netcat installed through home brew and it does not support the -U parameter.

I fixed it by uninstalling netcat in home brew brew uninstall netcat

I do not know what you can do about it but if others runs into the issue it is at least documented here.

[ppggff]

Thanks a lot, I will put this in the README file.