logging the lease time *sent* to clients in an "on commit" block

[Christof Chen]

> What syntax can I use to get the ACTUAL IP address lease time (option
> 51) the server sends to the client? We have a need to do detailed
> logging of leases handed out including the lease time.

A simple way to obtain this information is to append the lease end time to the 
ACK/OFFER syslog line:

This patch is against 3.0.5 server/dhcp.c:

@@ -2832,7 +2883,7 @@
 		s = (char *)0;

 	/* Say what we're doing... */
-	log_info ("%s on %s to %s %s%s%svia %s",
+	log_info ("%s on %s to %s %s%s%svia %s LE:%d",
 		  (state -> offer
 		   ? (state -> offer == DHCPACK ? "DHCPACK" : "DHCPOFFER")
 		   : "BOOTREPLY"),
@@ -2846,7 +2897,8 @@
 		  s ? "(" : "", s ? s : "", s ? ") " : "",
 		  (state -> giaddr.s_addr
 		   ? inet_ntoa (state -> giaddr)
-		   : state -> ip -> name));
+		   : state -> ip -> name),
+		  (int) lease -> ends);

 	/* Set up the hardware address... */
 	hto.hlen = lease -> hardware_addr.hlen;


Hope this helps.  
Best regards,
       Christof Chen