If you get the following error:
Main Process: Can't locate IO/Socket/INET6.pm in @INC (you may need to install the IO::Socket::INET6 module) (@INC contains: /usr/local/csf/lib /etc/cxs /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.30.0 /usr/local/share/perl/5.30.0 /usr/lib/x86_64-linux-gnu/perl5/5.30 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.30 /usr/share/perl/5.30 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) at (eval 27) line 1.Just install the libio-socket-inet6-perl package, on Ubuntu:
apt install libio-socket-inet6-perl