==== run-regress-broadcast_bind ====
cc -O2 -pipe  -g  -MD -MP  -c /home/src/regress/sys/netinet/broadcast_bind/broadcast_bind.c
cc   -o broadcast_bind broadcast_bind.o 
doas -n ifconfig vether11 create
doas -n ifconfig vether11 inet 10.91.120.11/24 up
/home/src/regress/sys/netinet/broadcast_bind/obj/broadcast_bind 10.91.120.11 10.91.120.22 10.91.120.255
doas -n ifconfig vether11 destroy