code: def l2n(l, c):
      "host to network long"
      c = []
      c.append(int((l >> 24) & U32(0xFF)))
      c.append(int((l >> 16) & U32(0xFF)))
      c.append(int((l >>  8) & U32(0xFF)))
      c.append(int((l      ) & U32(0xFF)))
      return f l2n(l, c):
      "host to network long"
      c = []
      c.append(int((l >> 24) & U32(0xFF)))
      c.append(int((l >> 16) & U32(0xFF)))
      c.append(int((l >>  8) & U32(0xFF)))
      c.append(int((l      ) & U32(0xFF)))
      return c
docs: host to network long