migrating from AIX to Linux, DHCP admin question

[Stewart Dean]

  AIX's DHCP has a nifty administration utility callled dadmin, which, among 
other things, spits out lease reports, that look like this:
> IP Address      Status  Lease Time Start Time  Last Leased Proxy ClientID
>
> 10.20.10.45     Free
> 10.20.10.46     Leased    24:00:00 09/23 10:01 09/23 10:01 FALSE 1-0022412c60d2
> 10.20.10.47     Expired   24:00:00             10/09 12:36 FALSE 1-00204ab6cf2b
> 10.20.10.48     Expired   24:00:00             09/25 09:02 FALSE 1-00204a84e7ee
I have a mess of execs that use this, among them:
1) A copyright violator track-down exec that first consults the firewall logs to 
determine the internal address that was using a NAT'ed external address pool 
address at the time of the violation.  It then consults snapshots of the entire 
DHCP leases and looks up the MAC that was leasing that address at the time of 
the violation.  We can then track down that MAC and deal with the student who 
violated the copyright.
2) A DHCP lease report exec that we use to track DHCP lease saturation:

DHCP Client Report -  based on dadmin -s output<<<<<<<<<<

>>>>>>>>>  726 Facstaff Leases on Thu Sep 23 15:18:32 EDT 2010<<<<<<<<<

                                            Lsd / Usd / RoE / Fre / Tot
All 10.20 except 80/110/141/150 ========== 329 / 0 / 1105 / 2068 / 3502
All 10.40 except 40/60 =================== 195 / 0 / 830 / 1199 / 4523
10.70.25/100/180/220/225 ================= 36 / 0 / 243 / 814 / 1093
10.100.20/50/70/80/90/120/130/170/180 ==== 141 / 0 / 908 / 829 / 1717
10.130 (PAC) ============================= 25 / 0 / 175 / 251 / 451

>>>>>>>>> >>>>>>>>>  927 Student Leases on Thu Sep 23 15:18:33 EDT 2010<<<<<<<<<
                                            Lsd / Usd / RoE / Fre / Tot
10.20.12/80/110/141/150 ================== 181 / 2 / 641 / 458 / 1455
10.40.40/60 ============================== 40 / 0 / 304 / 87 / 432
All 10.70 except 10.70.25/100/180/220,5 == 469 / 0 / 4645 / 981 / 5766
10.100.10/30/40/60/81/91/100/110/140-160 = 237 / 0 / 1949 / 709 / 3041

>>>>>>>>> >>>>>>>>>  1711 Wireless Leases on Thu Sep 23 15:18:33 EDT 2010<<<<<<<<<
                                       Lsd / Usd / RoE / Fre / Tot
10.10.16-23 ========================= 1711 / 2 / 311 / 1 / 2031

>>>>>>>>>>> >>>>>>>>>>>  Archived DHCP history report in /var/dhcpinfo<<<<<<<<<<
Like that.....
THE QUESTION:
I'm to understand that Open Source ISC DHCP doesn't have dadmin.  Is there a) a 
similar facility or b) has anyone out there created its equivalent and would be 
willing to share it?

-- 
"One must think like a hero to behave like a merely decent human being." - May 
Sarton Stewart Dean, Unix System Admin, Bard College, New York 12504 
sdean at bard.edu voice: 845-758-7475, fax: 845-758-7035