Debug messages in ISC code ???

sthaug at sthaug at
Mon Mar 26 10:32:41 UTC 2012

>                 In ISC dhcp-4.2.3 code , while running server or relay  if we enable -d(debug option) where would be the debug messages will be printed.
>                 Is there any separate file for storing debug message in ISC code.

Have you tried reading the code?

The debug messages are logged via the standard syslog facility. Which
means *you* control which file etc they are logged to. See also the
log-facility statement in dhcpd.conf.

Steinar Haug, Nethelp consulting, sthaug at

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