ALTF_TCP
{ "tcp", 0, ALTF_TCP, 1 },
{ "udp", 1, ALTF_TCP, 1 },
altflags = ALTF_TCP | ALTF_RDIRPLUS;
if (altflags & ALTF_TCP) {
altflags |= ALTF_TCP;
if (altflags & ALTF_TCP) {
altflags |= ALTF_TCP;
altflags &= ~ALTF_TCP;
{ "mntudp", 1, ALTF_TCP, 1 },