~16, 000 backup leases added to dhcpd.leases when implementing failover

[Mark Wagner]

When converting a single dhcp server to a failover configuration a large
number backup leases were added to dhcpd.leases.

Here is the config:

subnet 10.63.0.0 netmask 255.255.0.0 {
  filename "/pxelinux.0";
  next-server 10.60.0.107;
  option subnet-mask 255.255.0.0;
  option routers 10.63.0.1;
  pool {
    failover peer "dhcp-failover";
    range 10.63.128.1 10.63.255.254;
  }
}

The leases start around 10.63.191.100 and go to 10.63.255.255. An example
lease is

 lease 10.63.191.171 {
  starts 1 2014/09/15 23:06:08;
  tstp 1 2014/09/15 23:06:08;
  tsfp 1 2014/09/15 23:06:08;
  atsfp 1 2014/09/15 23:06:08;
  binding state backup;
}

Is this normal? It didn't seem to happen for other subnets.

How can I safely remove these leases?


-- 
Mark Wagner <mark at lanfear.net>
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