Dynamic 1:1 SNAT irule

reposting irule code on request - !note! code in two halves:

timing on for testing
timing on
when RULE_INIT {
    set ::oct3 0
    set ::oct4 1
    set static::oct3end 0
    set static::oct4end 255
    set static::timeout 600
    set static::debug 1

 }

when CLIENT_ACCEPTED {

    debugging
    if {$static::debug} {

        foreach key [table keys -subtable "ClientDynNat" -notouch] {
        log local0. "table ClientDynNat key: $key"
    }
    }

if { [set SnatTo [table lookup -subtable "ClientDynNat" [IP::client_addr]]] ne "" } {
     to reset idle timeout of dynamic NAT address so it's not re-allocated until client SNAT times out.
    table lookup -subtable "DynNatAddreses" $SnatTo

    log local0. "Found exisiting snat in ClientDynNat for [IP::client_addr]: [table lookup -notouch -subtable "ClientDynNat" [IP::client_addr]]"

    debugging
    if {$static::debug} {
    log local0. "table lookup in DynNatAddress for $SnatTo: [table lookup -notouch -subtable "DynNatAddreses" $SnatTo]"
    log local0. "table remaining ClientDynNat for [IP::client_addr]: [table timeout -subtable "ClientDynNat" -remaining [IP::client_addr]]"
    log local0. "table remaining DynNatAddress for $SnatTo: [table timeout -subtable "DynNatAddreses" -remaining $SnatTo]"
    }

    snat $SnatTo

    log local0. "deleting dynnats in tables"
    table delete -subtable "ClientDynNat" -all
    table delete -subtable "DynNatAddreses" -all   

} else {

    debugging
    if {$static::debug} {
        foreach key [table keys -subtable "DynNatAddreses" -notouch] {
            log local0. "table DynNatAddreses key: $key"
        }
            log local0. "DynNatAddress table count -- [table keys -subtable "DynNatAddreses" -count]"
            log local0. "no snat for [IP::client_addr]"
    }