Hello,
as the topic suggests, some ISP provide the internet link using DHCP and in RouterOS it's not possible to set the option "Check gateway: <ping/arp>" on the default route added dynamically by the DHCP clent. Therefore if the lease time is set high on the ISP DHCP server and the ISP gateway isn't rechable anymore, the default route is shown reachable where as it's actually not.
Such a feature would be really handy when using RouterOS as Load Balancer with multiple DHCP ISP links.
Let me know what you think about it.
Best regards
Aleksandar