Would it be possible to implement the “check gateway” feature for routes added by DHCP?
For example say the routerOS device is connected to ISP that requires DHCP via a Modem or Media convertor, said device loses it’s connection to the ISP, the ISP hands out a long DHCP lease so the routerOS device has no way of knowing the connection beyond the Modem is dead because it’s connection to the Modem still exists, and thus does not remove any routes via that now dead WAN.