getCanIdFromPGN returns negative ID that is mathematically correct but doesn't seem to work

[fabdrol]

When running getCanIdFromPGN utility with the following data I'm getting an ID of -1729167606. This ID gives the correct results when running it through getPGNFromCanId, but a socketcan frame generated with that ID won't parse (using canboatjs) and doesn't seem to send correctly either.

getCanIdFromPGN({
  pgn: 60928,
  src: 9,
  dst: 255,
  prio: 6
}) // => -1729167606

getPGNFromCanId(-1729167606) // => { pgn: 60928, src: 9, dst: 255, prio: 6 }

/* socketcan frame that won't parse in canboatjs
{
  "id": -1729167606,
  "ext": true,
  "data": {
    "type": "Buffer",
    "data": [
      30,
      24,
      224,
      124,
      0,
      130,
      51,
      64
    ]
  }
}
*/

Thoughts?

[fabdrol]

To clarify, I have set my can interface to loop back.

[fabdrol]

Actually nevermind. It turned out that it did work, but the loopback of the interface didn't work (even though querying socket options returned 1 for that). When I connected another CAN interface, everything was fine.