network: set dirty flag when link is being reconfigured

src/network/networkd-link.c

@@ -3089,6 +3089,7 @@ static int link_reconfigure_internal(Link *link, sd_netlink_message *m, bool for
                 return r;
 
         link_set_state(link, LINK_STATE_INITIALIZED);
+        link_dirty(link);
 
         /* link_configure_duid() returns 0 if it requests product UUID. In that case,
          * link_configure() is called later asynchronously. */