libnetutils: Clean all IPs assigned to the interface on cleaning

Change-Id: Ic285bbb4b224fc4e62e88e76b8b448edbe814a17
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/include/netutils/ifc.h b/include/netutils/ifc.h
index e245262..650d89d 100644
--- a/include/netutils/ifc.h
+++ b/include/netutils/ifc.h
@@ -36,6 +36,7 @@
 
 extern int ifc_reset_connections(const char *ifname);
 
+extern int ifc_get_addr(const char *name, in_addr_t *addr);
 extern int ifc_set_addr(const char *name, in_addr_t addr);
 extern int ifc_set_mask(const char *name, in_addr_t mask);
 extern int ifc_set_hwaddr(const char *name, const void *ptr);