Resolv.new

# File tmp/rubies/ruby-4.0.0/lib/resolv.rb, line 89
def initialize(resolvers=(arg_not_set = true; nil), use_ipv6: (keyword_not_set = true; nil))
  if !keyword_not_set && !arg_not_set
    warn "Support for separate use_ipv6 keyword is deprecated, as it is ignored if an argument is provided. Do not provide a positional argument if using the use_ipv6 keyword argument.", uplevel: 1
  end

  @resolvers = case resolvers
  when Hash, nil
    [Hosts.new, DNS.new(DNS::Config.default_config_hash.merge(resolvers || {}))]
  else
    resolvers
  end
end