I'm not sure what's going on here. I have a CentOS 7 DHCP server, and the leases file is growing at a linear but steady rate - it's re-issuing the same lease to the same MAC over and over again, and adding the new stanza to the file.
This server serves DHCP for a network of roughly 300 systems.
The DHCP config file looks like this:
ddns-update-style interim; allow booting; allow bootp; ignore client-updates; set vendorclass = option vendor-class-identifier; one-lease-per-client true; option pxe-system-type code 93 = unsigned integer 16; DHCPDARGS="enp130s0f0"; subnet 10.101.24.0 netmask 255.255.252.0 { option routers 10.101.24.1; option domain-name-servers 10.101.6.62; option domain-search "foo.com"; option subnet-mask 255.255.252.0; range dynamic-bootp 10.101.24.31 10.101.27.254; default-lease-time 172800; max-lease-time 172800; next-server 10.101.24.21; class "pxeclients" { match if substring (option vendor-class-identifier, 0, 9) = "PXEClient"; if option pxe-system-type = 00:02 { filename "ia64/elilo.efi"; } else if option pxe-system-type = 00:06 { filename "grub/grub-x86.efi"; } else if option pxe-system-type = 00:07 { filename "grub/grub-x86_64.efi"; } else { filename "pxelinux.0"; } } } Is it normal behavior for dhcpd to reply to a request for a lease from the same MAC over and over and add its stanza to the end of the dhcpd.leases file, again, over and over?
Is there some setting I'm missing?
