amavisd-new package missing dependency on IO::Socket::INET6
mail.warn amavis: (!)Net::Server: 2018/08/22-13:44:45 Unresolveable host [::1]:10024 - could not load IO::Socket::INET6: Can't locate Socket6.pm in @INC (you may need to install the Socket6 module) (@INC contains: /usr/local/lib/perl5/site
The amavisd-package really should be built with IPv6 support enabled ! Please add dependency to IO::Socket::INET6.