further MOBIKE stuff:

kernel properly reports network reconfiguration and informs all IKE_SAs
  MOBIKE in IKE_AUTH: MOBIKE_SUPPORTED notify and address exchange
  reestablishment of IKE_SAs on network reconfiguration kinda works
  not stable yet!

src/charon/sa/tasks/ike_auth.c

@@ -636,7 +636,12 @@ static status_t process_i(private_ike_auth_t *this, message_t *message)
 				case INVALID_SELECTORS:
 					/* these are errors, but are not critical as only the
 					 * CHILD_SA won't get build, but IKE_SA establishes anyway */
-					 break;
+					break;
+				case MOBIKE_SUPPORTED:
+				case ADDITIONAL_IP4_ADDRESS:
+				case ADDITIONAL_IP6_ADDRESS:
+					/* handled in ike_mobike task */
+					break;
 				default:
 				{
 					if (type < 16383)