From: sbyx <steven@midlink.org>
Date: Tue, 12 Aug 2014 13:10:27 +0000 (+0200)
Subject: Merge pull request #22 from mehlis/log-dhcp4-events
X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fodhcpd.git;a=commitdiff_plain;h=479cd9f6a5b6c68285004aa30bacfb284121ac8e

Merge pull request #22 from mehlis/log-dhcp4-events

dhcpv4: log requests and replies to syslog
---

479cd9f6a5b6c68285004aa30bacfb284121ac8e
diff --cc src/dhcpv4.c
index d978da8,7fe5bd8..9b9b528
--- a/src/dhcpv4.c
+++ b/src/dhcpv4.c
@@@ -334,18 -357,14 +357,23 @@@ static void handle_dhcpv4(void *addr, v
  	} else if (reqmsg == DHCPV4_MSG_REQUEST && reqaddr.s_addr &&
  			reqaddr.s_addr != htonl(lease->addr)) {
  		msg = DHCPV4_MSG_NAK;
 -		lease = NULL;
 +		/*
 +		 * DHCP client requested an IP which we can't offer to him. Probably the
 +		 * client changed the network. The reply type is set to DHCPV4_MSG_NAK,
 +		 * because the client should not use that IP.
 +		 *
 +		 * For modern devices we build an answer that includes a valid IP, like
 +		 * a DHCPV4_MSG_ACK. The client will use that IP and doesn't need to
 +		 * perform additional DHCP round trips.
 +		 *
 +		 */
  	}
  
+ 	syslog(LOG_WARNING, "received %s from %x:%x:%x:%x:%x:%x",
+ 			dhcpv4_msg_to_string(reqmsg),
+ 			req->chaddr[0],req->chaddr[1],req->chaddr[2],
+ 			req->chaddr[3],req->chaddr[4],req->chaddr[5]);
+ 
  	if (reqmsg == DHCPV4_MSG_DECLINE || reqmsg == DHCPV4_MSG_RELEASE)
  		return;