I have the openWrt Firmware and upgrade installed in my Netgear R7800 without any problems.
In fact i do that to have the opportunity to have the option Wake on Lan in my R7800.
But i can't find any option WOL in the configuration Panel.
Isn't no possibillity to have WOL with the R7800 ???
(I'm a big Newbie)
He meant that you should use the opkg package manager to install the additional package luci-app-wol that installs the the LuCI interface for wol functionality and (also the underlying etherwake package).