Add note that WebRTC does not work offline on file: protocol

MDN URL

https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API

What specific section or headline is this issue about?

No response

What information was incorrect, unhelpful, or incomplete?

No information about using WebRTC offline.

No information about using WebRTC offline and on file: protocol.

What did you expect to see?

WebRTC does not work offline on file: protocol.

Do you have any supporting links, references, or citations?

https://bugzilla.mozilla.org/show_bug.cgi?id=831926

Do you have anything more you want to share?

No response

MDN metadata

• Folder: en-us/web/api/webrtc_api
• MDN URL: https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API
• GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/api/webrtc_api/index.md
• Last commit: https://github.com/mdn/content/commit/19dbdc2139ab1c68651da2b9338061d64567665d
• Document last modified: 2022-10-30T06:16:29.000Z