I had an issue https://github.com/reverse-shell/routersploit/issues/176 with bruteforce my router zyxel keenetic lite.
The issue was fixed by adding a new modules, that uses Digest Authentication instead of Basic Authentication of python-requests. Now it works. I think than many other routers can use HTTPDigestAuth instead of HTTPBasicAuth, and it can fix the issue of HTTP responce 401 when trying the correct credentials during router bruteforce. Please, merge and add these two modules.