sequential
sequential:
IPNY_PORTMAP tcpudp portpair sequential
| IPNY_PORTMAP portpair tcpudp sequential
| IPNY_PORTMAP tcpudp IPNY_AUTO sequential
| IPNY_ICMPIDMAP YY_STR portpair sequential
rval = seq ? sequential(argv, fa) : parallel(argv, fa);
static int sequential(char **, fileargs_t *);