Can't capture any packet using expample in README

[AlllenShen]

I'm tring to use this packege in an electron project, and use the first expample in README, but nothing output in colsole.

Using Cap.deviceList() can find 7 divices.

I‘ve change the ip to my own ip in the WLAN.

var c = new Cap();
var device = Cap.findDevice('192.168.0.114');
var filter = 'tcp and dst port 80';
var bufSize = 10 * 1024 * 1024;
var buffer = Buffer.alloc(65535);

btw, when i use ethernet and disconnect from WLAN, there are also 7 divises logged. I don't konw why it do not changed when I connect to WLAN.

[AlllenShen]

I found that I use wrong ip while I'm using Ethernet.