code: function IPmyipis () {
    const self = this
    self.getIP = cb => {
      request('http://myip.is', (err, _, body) => {
        if (err) return cb(err)
        const m = body.match(/title="copy ip address">(\d+\.\d+\.\d+\.\d+)<\/a>/)
        if (!m) return cb(new Error('Invalid response'))
        return cb(null, m[1])
      })
    }
  }
docs: /* getExternalIP