That’s simply the url to get the gl-inet web management interface.
I’m asking about the openWRT one !
There’s a redirection on the usual openwrt url (and anything else in fact):
http://192.168.8.1/cgi-bin/luci/ → http://192.168.8.1/#
curl http://192.168.8.1/cgi-bin/luci/
<html>
<head>
<meta http-equiv='refresh' content='1; url=/#' />
</head>
<body>
</body>