# File lib/net/ssh/transport/packet_stream.rb, line 63
    def peer_ip
      @peer_ip ||=
        if respond_to?(:getpeername)
          addr = getpeername
          Socket.getnameinfo(addr, Socket::NI_NUMERICHOST | Socket::NI_NUMERICSERV).first
        else
          PROXY_COMMAND_HOST_IP
        end
    end