V_tcpmod_setmss_eid
insntod(cmd, kidx)->kidx != V_tcpmod_setmss_eid ||
V_tcpmod_setmss_eid = ipfw_add_eaction(ch, ipfw_tcpmod, "tcp-setmss");
if (V_tcpmod_setmss_eid == 0)
ipfw_del_eaction(ch, V_tcpmod_setmss_eid);
V_tcpmod_setmss_eid = 0;