So turns out Net::FTP isn't used by dnsruby since a good decade, the require was just left there. Sorry I should have checked before adding the dependency.
It was introduced in 58c05cd2596d1daad11b565d22cf187a9babddce (2009) to download IANA tar archive, but removed in f9b99a11ff83ebdbe44dae273931184415f90b5a (2010).
So turns out
Net::FTP
isn't used by dnsruby since a good decade, therequire
was just left there. Sorry I should have checked before adding the dependency.It was introduced in 58c05cd2596d1daad11b565d22cf187a9babddce (2009) to download IANA tar archive, but removed in f9b99a11ff83ebdbe44dae273931184415f90b5a (2010).
But no big deal.