No Free Addresses?

[Bob Proulx]

Jason Frisvold wrote:
> Bob Proulx wrote:
> > My Question: How can I tell why the dhcpd daemon ran out of free
> > addresses?  Is there a tool that I can use to scan the dhcpd.leases
> > file and have it report the status of each IP?  There are a lot of
> > addresses and tracing the file manually is quite tedious.
> 
> Check this out.  Works pretty well.
> 
> http://sourceforge.net/projects/dhcpd-pools/

Interesting.  Thanks for suggesting that program.  But it just
confuses me more since it seems to confirm that I had plenty of
address space available while at the same time saying that I had none
to allocate.  Here is what it says for me.  At the time of this
snapshot the dhcpd was unable to provide leases.

  dhcpd-pools -c dhcpd.conf -l dhcpd.leases.snapshot 
  Ranges:
  shared net name     first ip           last ip            max   cur    percent  touch   t+c  t+c perc     bu  bu perc
  All networks        172.17.29.1      - 172.17.29.255      255    29     11.373     38    67    26.275     38   14.902
  All networks        172.17.30.10     - 172.17.31.254      501   147     29.341      0   147    29.341      0    0.000

  Shared networks:
  name                   max   cur     percent  touch    t+c  t+c perc     bu  bu perc

  Sum of all ranges:
  name                   max   cur     percent  touch    t+c  t+c perc     bu  bu perc
  All networks           756   176     23.280      38    214    28.307     76   10.053

Hmm...  The currently allocated was 147 out of 501 or 29% but at the
same time the 'bu' field says 0 available for allocation.  Working off
of the live files with the extra pool space added it says:

  dhcpd-pools -c /etc/dhcp3/dhcpd.conf -l /var/lib/dhcp3/dhcpd.leases
  Ranges:
  shared net name     first ip           last ip            max   cur    percent  touch   t+c  t+c perc     bu  bu perc
  All networks        172.17.27.1      - 172.17.27.255      255     0      0.000      0     0     0.000      0    0.000
  All networks        172.17.28.1      - 172.17.28.255      255    24      9.412      1    25     9.804      0    0.000
  All networks        172.17.29.1      - 172.17.29.255      255    19      7.451     36    55    21.569     36   14.118
  All networks        172.17.30.10     - 172.17.31.254      501   137     27.345      0   137    27.345      0    0.000

  Shared networks:
  name                   max   cur     percent  touch    t+c  t+c perc     bu  bu perc

  Sum of all ranges:
  name                   max   cur     percent  touch    t+c  t+c perc     bu  bu perc
  All networks          1266   180     14.218      37    217    17.141     72    5.687

Obviously it is allocating out of the added pool.  But at the same
time the 'bu' field is zero meaning nothing available to allocate.
That seems to be a basic conflict to me.

Bob