Hello there in ISC,

There can be one small improvement in the newly (dhcp-4.2.0) added code.
In common/dispatch.c the add_timeout() function was slightly modified.
Problem is that the newly added code uses
int sec, usec;
for manipulating with time values, e.g.
sec  = when->tv_sec - cur_tv.tv_sec

This can cause problems on 64bit machines when some crazy server sends
huge values of lease-time/renewal-time/rebinding-time.
For real example see
https://bugzilla.redhat.com/show_bug.cgi?id=628258

Attached is patch that fixes it.
Regards

Jiri Popelka
Red Hat, inc.