DHCP Server Lease last-seen comparison
/ip dhcp-server lease print where last-seen > "30d"/ip dhcp-server lease print where server=dhcp-lan && last-seen > "30d" && last-seen !="never" && comment~"^auto-static"/ip dhcp-server lease print where last-seen > "30d"/ip dhcp-server lease print where server=dhcp-lan && last-seen > "30d" && last-seen !="never" && comment~"^auto-static"