/usr/lib/ruby/vendor_ruby/specinfra/command/base/ip6tables.rb is in ruby-specinfra 2.66.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | class Specinfra::Command::Base::Ip6tables < Specinfra::Command::Base
end
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