I am trying to understand how to use WebRTC to establish P2P connections following the example here: https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API/Simple_RTCDataChannel_sample. In my mind, it seems like when I create a new RTCPeerConnection, that connection should contain information about my public ip and subnet, so that when I create an offer and pass it to the remote computer, the remote would then have the details about where to send the response offer. However, whenever I try creating an RTCPeerConnection, it has 0.0.0.0 in it and no mention of my ip (which is not 0.0.0.0). Do you know why this could be? What am I doing wrong? How do I get it to display my public ip?

var localConnection = new RTCPeerConnection({
    'iceServers': [
        {
            'urls': ['stun:stun.l.google.com:19302'],
        },
    ],
});

var offer = localConnection.createOffer();
await localConnection.setLocalDescription(offer);

console.log(localConnection.localDescription);

// RTCSessionDescription { type: "offer", sdp: "v=0\r\no=mozilla...THIS_IS_SDPARTA-97.0 5252435491124817570 1 IN IP4 0.0.0.0\r\ns=-\r\nt=0 0\r\na=sendrecv\r\na=fingerprint:sha-256 94:95:5B:C2:D2:DC:56:71:EF:D6:A6:3E:CB:07:09:B0:A3:DB:FD:0B:8D:80:96:8C:56:B6:72:84:F3:36:1A:04\r\na=group:BUNDLE 1\r\na=ice-options:trickle\r\na=msid-semantic:WMS *\r\nm=application 9 UDP/DTLS/SCTP webrtc-datachannel\r\nc=IN IP4 0.0.0.0\r\na=sendrecv\r\na=ice-pwd:e4ae4077195d25ff0973d2c70c50111f\r\na=ice-ufrag:efc13e32\r\na=mid:1\r\na=setup:actpass\r\na=sctp-port:5000\r\na=max-message-size:1073741823\r\n" }