code: function getDefaultRoute() {
    try {
      const fileContents = fs.readFileSync('/proc/net/route', 'utf8'); // eslint-disable-line no-sync
      const routes = fileContents.split('\n');
      for (const routeIdx in routes) {
        const fields = routes[routeIdx].trim().split('\t');
        if (fields[1] === '00000000') {
          const address = fields[2];
          // Convert to little endian by splitting every 2 digits and reversing that list
          const littleEndianAddress = address.match(/.{2}/g).reverse().join('');
          return intToIP(parseInt(littleEndianAddress, 16));
        }
      }
    } catch (e) {
      console.error('Could not get default route from /proc/net/route');
    }
    return null;
  }
docs: Returns the system default interface on Linux