diff --git a/src/nm-ip4-config.c b/src/nm-ip4-config.c
index 0722981..5a19373 100644
--- a/src/nm-ip4-config.c
+++ b/src/nm-ip4-config.c
@@ -35,6 +35,7 @@
 
 #include "nm-ip4-config-glue.h"
 #include "nm-dbus-glib-types.h"
+#include "nm-logging.h"
 
 
 G_DEFINE_TYPE (NMIP4Config, nm_ip4_config, G_TYPE_OBJECT)
@@ -650,6 +651,16 @@ nm_ip4_config_to_rtnl_addr (NMIP4Config *config, guint32 i, guint32 flags)
 		success = (ip4_addr_to_rtnl_broadcast (bcast, addr) >= 0);
 	}
 
+{
+char buf[1024];
+char buf2[INET_ADDRSTRLEN];
+struct in_addr a = { .s_addr = nm_ip4_address_get_address (config_addr) };
+nl_object_dump_buf ((struct nl_object *) addr, buf, sizeof (buf) - 1);
+buf[1023] = 0;
+inet_ntop (AF_INET, &a, buf2, sizeof (buf2));
+nm_log_warn (LOGD_IP4, "%s: created '%s' from '%s/%d' flags 0x%X", __func__, buf, buf2, nm_ip4_address_get_prefix (config_addr), flags);
+}
+
 	if (!success) {
 		rtnl_addr_put (addr);
 		addr = NULL;
diff --git a/src/nm-system.c b/src/nm-system.c
index 3998342..64be89a 100644
--- a/src/nm-system.c
+++ b/src/nm-system.c
@@ -196,6 +196,8 @@ sync_addresses (int ifindex,
 	/* Walk through the cache, comparing the addresses already on
 	 * the interface to the addresses in addrs.
 	 */
+nm_log_warn (LOGD_IP4, "%s: comparing existing addresses", __func__);
+
 	for (match = nl_cache_get_first (addr_cache); match; match = nl_cache_get_next (match)) {
 		gboolean buf_valid = FALSE;
 		match_addr = (struct rtnl_addr *) match;
@@ -211,6 +213,7 @@ sync_addresses (int ifindex,
 			}
 
 			if (addrs[i]) {
+nm_log_warn (LOGD_IP4, "%s: address %d already exists", __func__, i);
 				/* match == addrs[i], so remove it from addrs so we don't
 				 * try to add it to the interface again below.
 				 */
@@ -222,6 +225,13 @@ sync_addresses (int ifindex,
 
 		nladdr = rtnl_addr_get_local (match_addr);
 
+{
+char buf2[1024];
+nl_object_dump_buf ((struct nl_object *) match_addr, buf2, sizeof (buf2) - 1);
+buf2[1023] = 0;
+nm_log_warn (LOGD_IP4, "%s: no match for existing %s", __func__, buf2);
+}
+
 		/* Don't delete IPv6 link-local addresses; they don't belong to NM */
 		if (rtnl_addr_get_family (match_addr) == AF_INET6) {
 			struct in6_addr *tmp;
@@ -276,7 +286,7 @@ sync_addresses (int ifindex,
 		}
 
 		if (buf_valid) {
-			nm_log_dbg (log_domain, "(%s): adding address '%s/%d'",
+			nm_log_warn (log_domain, "(%s): adding address '%s/%d'",
 			            iface, buf, nl_addr_get_prefixlen (nladdr));
 		}
 
@@ -333,6 +343,12 @@ add_ip4_addresses (NMIP4Config *config, int ifindex)
 		}
 
 		addrs[i] = nm_ip4_config_to_rtnl_addr (config, i, flags);
+{
+char buf[1024];
+nl_object_dump_buf ((struct nl_object *) addrs[i], buf, sizeof (buf) - 1);
+buf[1023] = 0;
+nm_log_warn (LOGD_IP4, "   %i: %s", i, buf);
+}
 		if (!addrs[i]) {
 			nm_log_warn (LOGD_DEVICE | LOGD_IP4,
 			             "(%s): couldn't create rtnl address!",
@@ -408,11 +424,14 @@ nm_system_apply_ip4_config (int ifindex,
 	g_return_val_if_fail (ifindex > 0, FALSE);
 	g_return_val_if_fail (config != NULL, FALSE);
 
+nm_log_warn (LOGD_IP4, "%s: applying IPv4 config for ifindex %d", __func__, ifindex);
+
 	if (flags & NM_IP4_COMPARE_FLAG_ADDRESSES) {
 		if (!add_ip4_addresses (config, ifindex))
 			return FALSE;
 		sleep (1);
 	}
+nm_log_warn (LOGD_IP4, "%s: DONE applying IPv4 config", __func__);
 
 	if (flags & NM_IP4_COMPARE_FLAG_ROUTES) {
 		for (i = 0; i < nm_ip4_config_get_num_routes (config); i++) {