nat on address pool, onr address is broadcast and/or subnet

[Igor Popov]

        Hi, all.

Simple question
Say, I have:
 
# ifconfig em1
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        options=4b<RXCSUM,TXCSUM,VLAN_MTU,POLLING>
        inet q broadcast 80.0.0.31
        inet 80.0.0.28 netmask 0xffffffff broadcast 80.0.0.28
        inet 80.0.0.29 netmask 0xffffffff broadcast 80.0.0.29
        inet 80.0.0.30 netmask 0xffffffff broadcast 80.0.0.30
        ether 00:0f:ea:4a:89:9d
        media: Ethernet autoselect (1000baseTX <full-duplex>)
        status: active

And what if I do NAT:
nat pass on em1 from 192.168.128.0/20 to !(self) -> 80.0.0.28/30 source-hash
Will broadcast address (80.0.0.31) be used for NATing?
And what happend if I will switch to 80.0.0.24/30, subnet address will be used 
for NAT? 

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