Hostroute => Bridge and IP-Forwardings

Hello unix community,

Could anyone tell me what is the macosx command for:

1) ip hostroute to bridge:
ip route add 188.40.1.40/32 dev br0
(linux command)
/32 ist for netmask? Because I use /29.

2) and IP-Forwarding:
net.ipv4.ip_forward = 1
(linux command)

I hope anyone could help me!

Did you try the plane old "route" command?