Is there any way to put an openwrt router into sleep mode and use wol to wake it up?
Which router? Most devices where OpenWrt is run do not support sleeping.
Even if the hardware would support it, the network would still be down without router/ switch being present and running, dhcp leases timing out, DNS resolution failing, routes expiring, … not a good idea at all.
Target device is Gee B70.
The router is in my sleeping room and not the main router. I wanna to turn it off when I am out of my home. I have other routers for dhcp, dns etc.