Specifically this, when I was noticing my error, it kept displaying dhcp info over and over again before the error, at about the same frequency as the messages here:
Dec 18 00:48:46 dcerouter dhcpd: DHCPACK on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:46 dcerouter mountd[6110]: mount request from unknown host 192.168.80.2 for
/usr/pluto/diskless/73 (/usr/pluto/diskless/73)
Dec 18 00:48:47 dcerouter dhcpd: DHCPDISCOVER from 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:47 dcerouter dhcpd: DHCPOFFER on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:47 dcerouter dhcpd: DHCPREQUEST for 192.168.80.2 (192.168.80.1) from 00:e0:4
c:ea:58:c4 via eth1
Dec 18 00:48:47 dcerouter dhcpd: DHCPACK on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:48 dcerouter dhcpd: DHCPREQUEST for 192.168.80.2 (192.168.80.1) from 00:e0:4
c:ea:58:c4 via eth1
Dec 18 00:48:48 dcerouter dhcpd: DHCPACK on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:48 dcerouter mountd[6110]: mount request from unknown host 192.168.80.2 for
/usr/pluto/diskless/73 (/usr/pluto/diskless/73)
Dec 18 00:48:49 dcerouter dhcpd: DHCPDISCOVER from 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:49 dcerouter dhcpd: DHCPOFFER on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:49 dcerouter dhcpd: DHCPREQUEST for 192.168.80.2 (192.168.80.1) from 00:e0:4
c:ea:58:c4 via eth1
Dec 18 00:48:49 dcerouter dhcpd: DHCPACK on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:50 dcerouter dhcpd: DHCPREQUEST for 192.168.80.2 (192.168.80.1) from 00:e0:4
c:ea:58:c4 via eth1
Dec 18 00:48:50 dcerouter dhcpd: DHCPACK on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:51 dcerouter mountd[6110]: mount request from unknown host 192.168.80.2 for
/usr/pluto/diskless/73 (/usr/pluto/diskless/73)
Dec 18 00:27:50 dcerouter dhclient: bound: renewal in 35730 seconds.
Dec 18 00:27:54 dcerouter ntpdate[8227]: the NTP socket is in use, exiting
Dec 18 00:48:23 dcerouter dhcpd: DHCPDISCOVER from 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:23 dcerouter dhcpd: DHCPOFFER on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:25 dcerouter dhcpd: DHCPREQUEST for 192.168.80.2 (192.168.80.1) from 00:e0:4
c:ea:58:c4 via eth1
Dec 18 00:48:25 dcerouter dhcpd: DHCPACK on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:25 dcerouter in.tftpd[27138]: connect from 192.168.80.2 (192.168.80.2)
Dec 18 00:48:25 dcerouter atftpd[27138]: Advanced Trivial FTP server started (0.7)
Dec 18 00:48:25 dcerouter atftpd[27138]: Serving /tftpboot/pxelinux.0 to 192.168.80.2:207
0
Dec 18 00:48:25 dcerouter atftpd[27138]: Serving /tftpboot/pxelinux.0 to 192.168.80.2:207
1
Dec 18 00:48:25 dcerouter atftpd[27138]: Serving /tftpboot/pxelinux.cfg/01-00-e0-4c-ea-58
-c4 to 192.168.80.2:57089
Dec 18 00:48:25 dcerouter atftpd[27138]: Serving /tftpboot/73/vmlinuz to 192.168.80.2:570
90
Dec 18 00:48:26 dcerouter atftpd[27138]: Serving /tftpboot/73/initrd.img to 192.168.80.2:
57091
Dec 18 00:48:43 dcerouter dhcpd: DHCPDISCOVER from 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:43 dcerouter dhcpd: DHCPOFFER on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:43 dcerouter dhcpd: DHCPREQUEST for 192.168.80.2 (192.168.80.1) from 00:e0:4
c:ea:58:c4 via eth1
Dec 18 00:48:43 dcerouter dhcpd: DHCPACK on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:44 dcerouter dhcpd: DHCPREQUEST for 192.168.80.2 (192.168.80.1) from 00:e0:4
c:ea:58:c4 via eth1
Dec 18 00:48:44 dcerouter dhcpd: DHCPACK on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:44 dcerouter mountd[6110]: mount request from unknown host 192.168.80.2 for
/usr/pluto/diskless/73 (/usr/pluto/diskless/73)
Dec 18 00:48:45 dcerouter dhcpd: DHCPDISCOVER from 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:45 dcerouter dhcpd: DHCPOFFER on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:45 dcerouter dhcpd: DHCPREQUEST for 192.168.80.2 (192.168.80.1) from 00:e0:4
c:ea:58:c4 via eth1
Dec 18 00:48:45 dcerouter dhcpd: DHCPACK on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:46 dcerouter dhcpd: DHCPREQUEST for 192.168.80.2 (192.168.80.1) from 00:e0:4
c:ea:58:c4 via eth1
Dec 18 00:48:46 dcerouter dhcpd: DHCPACK on 192.168.80.2 to 00:e0:4c:ea:58:c4 via eth1
Dec 18 00:48:46 dcerouter mountd[6110]: mount request from unknown host 192.168.80.2 for
/usr/pluto/diskless/73 (/usr/pluto/diskless/73)