DHCP 4.2.0 does nothing

[Ray Phillips]

Late yesterday afternoon I installed DHCP 4.2.0 on our failover pair 
which are running NetBSD/i386 5.0.2.

There were no difficulties during installation...

% /usr/bin/time sh -c 'CFLAGS="-static" ./configure --sysconfdir=/etc 
--disable-dhcpv6 > configure.log 2>&1'
        32.24 real        17.07 user        11.43 sys
% /usr/bin/time sh -c 'make > make.log 2>&1'
       672.91 real       528.69 user        93.26 sys
%
% su
Password:
# /usr/bin/time sh -c 'make install > make-install.log 2>&1'
         7.84 real         3.02 user         4.18 sys
#

except that, annoyingly, GNU make is now required.  I remember that 
it was also required for 4.0.0a1 but Shane modified it so BSD make 
was sufficient.  Is it possibile to do away with the necessity for 
using GNU make in future releases too, please?

After installation I killed the 4.1.1-P1 daemons, started the 4.2.0 
ones and checked /var/log/dhcpd (this is from the primary, which was 
started second):

Jul 21 17:01:26 dhcp1 dhcpd: peer foo: disconnected
Jul 21 17:01:26 dhcp1 dhcpd: failover peer foo: I move from normal to 
communications-interrupted
Jul 21 17:01:38 dhcp1 dhcpd: Internet Systems Consortium DHCP Server 4.2.0
Jul 21 17:01:38 dhcp1 dhcpd: Copyright 2004-2010 Internet Systems Consortium.
Jul 21 17:01:38 dhcp1 dhcpd: All rights reserved.
Jul 21 17:01:38 dhcp1 dhcpd: For info, please visit 
https://www.isc.org/software/dhcp/
Jul 21 17:01:38 dhcp1 dhcpd: Wrote 0 class decls to leases file.
Jul 21 17:01:38 dhcp1 dhcpd: Wrote 0 deleted host decls to leases file.
Jul 21 17:01:38 dhcp1 dhcpd: Wrote 0 new dynamic host decls to leases file.
Jul 21 17:01:38 dhcp1 dhcpd: Wrote 632 leases to leases file.
Jul 21 17:01:38 dhcp1 dhcpd: failover peer foo: I move from 
communications-interrupted to startup

That looked OK so I went home.  Later I checked how the primary was 
going -- fortunately because the only line that had been added to the 
log file in the eight intervening hours was:

Jul 21 17:01:53 egalite dhcpd: failover peer foo: I move from startup 
to communications-interrupted

top showed the dhcpd daemon was using a lot of cpu cycles:

   PID USERNAME PRI NICE   SIZE   RES STATE      TIME   WCPU    CPU COMMAND
13007 root      27    0  7980K 1168K RUN        0:59 94.88% 90.62% dhcpd
27535 root      85    0  2844K 1184K wait       0:01  2.78%  2.64% less
24876 ray       85    0  8668K 2792K select     0:00  0.15%  0.15% sshd
  9248 root      85    0    28M   26M kqueue   487:08  0.00%  0.00% named
     0 root      96    0     0K   22M rfwcond  214:12  0.00%  0.00% [system]
   114 root      85    0  2932K 1020K kqueue   125:39  0.00%  0.00% syslogd

The machine is only a 400 MHz PII but that's abnormal.  Usually top 
shows dhcpd is way down the list of processess and using 0% CPU.

The situation was the same on the secondary.  I checked 
/etc/dhcpd.conf and /var/db/dhcpd.leases using `dhcpd -t' and `dhcpd 
-T' and restarted the daemons but since there was no change, went 
back to using 4.1.1-P1.

I didn't make any changes to the configuration file between stopping 
4.1.1-P1 and starting 4.2.0, assuming none were required.  I wonder 
if I'm guilty of missing an obvious instruction or warning in the 
release notes?

I've just noticed that the 4.x daemons don't print 'Listening' on or 
'Sending on' information when they start like this:

Aug 26 15:49:43 proxy0 dhcpd: Listening on BPF/ex0/00:c0:4f:cf:f1:8e/jkmrc
Aug 26 15:49:43 proxy0 dhcpd: Sending on   BPF/ex0/00:c0:4f:cf:f1:8e/jkmrc
Aug 26 15:49:43 proxy0 dhcpd: Sending on   Socket/fallback/fallback-net

as the 3.x versions did.  Why is that?


Ray