Proxy Protocol Receiver

I believe 3) should be as easy as adding the following to the bottom of the code hung off the CLIENT_DATA event, along with a setting of $static::useProxyProtocolSourceForSNAT in "RULE_INIT" to 1.

This syntax validates, but I'll need time to do some testing.

Chad

if {$static::useProxyProtocolSourceForSNAT} {
    if {$srcaddr}{
        snat $srcaddr
    } elseif {$v2_sourceAddress} {
        snat $v2_sourceAddress
    } elseif {$v2_v6sourceAddress} {
        snat $v2_v6sourceAddress
    }
}