==== run-regress-broadcast_bind ====
cc -O2 -pipe   -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 10.221.183.11/24 up
/home/src/regress/sys/netinet/broadcast_bind/obj/broadcast_bind 10.221.183.11 10.221.183.22 10.221.183.255
doas -n ifconfig vether11 destroy