Strange end time in Status: DHCP leases

ristosu

Hi,

One of my DHCP clients has lines like this in Status: DHCP leases:

192.168.1.44 78:a3:e4:eb:e0:78 2015/03/07 17:08:35 cltt 6 offline active
192.168.2.16 78:a3:e4:eb:e0:78 2015/03/08 12:37:57 cltt 0 online active

Seems to be an Apple device. Anyone seen this before? (cltt = client last transaction time) Normally, end time is a date&time 2h or 24h later than start time.

Risto

ristosu

Looks like I have a partial answer to my question: dhcpd.log tells me that this iPhone is sending BOOTREQUESTs instead of DHCPREQUESTs.

The corresponding chapter in dhcpd.leases looks like this:

lease 192.168.2.16 {
starts 0 2015/03/08 14:59:44;
ends never;
cltt 0 2015/03/08 14:59:44;
binding state active;
next binding state free;
rewind binding state free;
hardware ethernet 78:a3:e4:eb:e0:78;
}

Obviously the code that builds the web page finds 'ends', hops over the next word, and takes the following two.

Risto

phil.davis

I know this has been reported before, and I thought the code had been modified to handle the "never" case. But I must have been dreaming.
This code should fix it: https://github.com/pfsense/pfsense/pull/1553

Leases file format ref: https://www.freebsd.org/cgi/man.cgi?query=dhcpd.leases&sektion=5&apropos=0&manpath=FreeBSD+9.2-RELEASE+and+Ports

If a lease will never expire, date is never instead of an actual date.

luckman212

Are things like the below screenshot normal? Just wondering, I've never seen such things before ("tstp never" or "cltt 3" etc). This is from a 2.1.5 nanobsd system.

dhcpd.conf attached

dhcpd.conf.txt