```ruby
module Bitcoin
  module Network

    class PeerDiscovery

      attr_reader :logger

      def initialize
        @logger = Bitcoin::Logger.create(:debug)
      end

      # get peer addresses, from DNS seeds.
      def peers
        # TODO add find from previous connected peer at first.
        find_from_dns_seeds
      end

      private

      def find_from_dns_seeds
        logger.debug 'discover peer address from DNS seeds.'
        Bitcoin.chain_params.dns_seeds.map {|seed|
          begin
            Socket.getaddrinfo(seed, Bitcoin.chain_params.default_port).map{|a|a[2]}.uniq
          rescue SocketError => e
            logger.error "SocketError occurred when load DNS seed: #{seed}, error: #{e.message}"
          end
        }.flatten
      end

    end

  end
end```

Fix a bug that contains an incorrect IP when an error occurs when searching seeds
user
```ruby
module Bitcoin
  module Network

    class PeerDiscovery

      attr_reader :logger

      def initialize
        @logger = Bitcoin::Logger.create(:debug)
      end

      # get peer addresses, from DNS seeds.
      def peers
        # TODO add find from previous connected peer at first.
        find_from_dns_seeds
      end

      private

      def find_from_dns_seeds
        logger.debug 'discover peer address from DNS seeds.'
        Bitcoin.chain_params.dns_seeds.map {|seed|
          begin
            Socket.getaddrinfo(seed, Bitcoin.chain_params.default_port).map{|a|a[2]}.uniq
          rescue SocketError => e
            logger.error "SocketError occurred when load DNS seed: #{seed}, error: #{e.message}"
            nil
          end
        }.flatten.compact
      end

    end

  end
end```
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