metrics_add_open
if(!metrics_add_open(metrics, cfg, p->address, cfg->metrics_port, 1)) {
if(cfg->do_ip6 && !metrics_add_open(metrics, cfg, "::1", cfg->metrics_port, 0)) {
!metrics_add_open(metrics, cfg, "127.0.0.1", cfg->metrics_port, 1)) {