throughput_start
throughput_start(&ipcp->throughput, "IPCP throughput",
throughput_start(&ipv6cp->throughput, "IPV6CP throughput",
throughput_start(&mp->link.stats.total, "MP throughput", 1);
throughput_start(&p->link.stats.total, "physical throughput",
extern void throughput_start(struct pppThroughput *, const char *, int);