My ISP is using L2TP. Unfortunately, OpenWRT does not support it out of the box.
Is there any tutorial on how I may install it? I understand that I need to install xl2tpd and its dependencies ip, resolveip, kmod-l2tp, kmod-pppol2tp, ppp-mod-pppol2tp, but where may I find them? I tried, but I couldn't find it. My router model is D-link DIR-878
Also, my router does not have connection to the internet.