ISC DHCP Lease File. After the DHCP server is configured and started, the lease file records lease transactions.
Your ISC dhcpd config file (posted June 2016) has no range statement. No leases are free because the server can't find an IP address, in a defined range, to hand out. Provided by: isc-dhcp-server_4.3.5-3ubuntu7_amd64 NAME dhcp-lease-list - Prints active DHCP leases. SYNOPSIS dhcp-lease-list [options] OPTIONS--help Shows command line help --parsable machine readable output with full dates --last prints the last (even if end @heemayl this file is empty in my case (Ubuntu 15.10), maybe because NetworkManager is acquiring dhcp lease (?) – madneon May 20 '16 at 23:03 ipconfig getpacket The yet to be published network updates to the Ubuntu Serverguide does not have a dhcp DNS override example. See if the DNS setting examples here for static can be applied to a dhcp yaml config file. – Doug Smythies May 22 '18 at 16:34 the network DHCP server(s) will lease addresses from: boot-file-name (string; Default: ) Boot file name: caps-manager (string; Default: ) Comma-separated list of IP addresses for one or more CAPsMAN system managers. DHCP Option 138 (capwap) will be used. dhcp-option (string; Default: ) Add additional DHCP options from option list. You will find DHCP client lease information in an appropriately named interface file in the /var/db/dhcpclient/leases directory. Within the file will be the LeaseLength key and the value (in seconds), i.e. 86400 = one day. I hope that helps. Dominic. The lease file is a log-structured file - whenever a lease changes, the contents of that lease are written to the end of the file. This means that it is entirely possible and quite reasonable for there to be two or more declarations of the same lease in the lease file at the same time.
Jul 09, 2020 · The Import-DhcpServer cmdlet imports the Dynamic Host Configuration Protocol (DHCP) server service configuration, and optionally lease data, from the specified file. This cmdlet is only supported for the DHCP server services running on Windows Server 2012.