SNAT with client and pool member on same subnet

1. Create a SNAT pool and add SNAT Pool members to it.

[SNATPOOL]
ltm snatpool dmz1_snat {
members {
172.16.0.7
172.16.0.8
}
}

ltm snatpool dmz2_snat {
members {
172.16.1.7
172.16.1.8
}
}

2. Create a SNAT data group

[ SNAT-DATAGROUP ]
ltm data-group internal snat-dg {
records {
172.16.0.0/24 { dmz1_snat }
172.16.1.0/24 { dmz2_snat }
}
type ip
}

3. Write iRule and apply it to virtual server

when LB_SELECTED {
if { [class match [LB::server addr] equals snat-dg] } {
snatpool [class match -value [LB::server addr] equals snat-dg]
} else {
snat automap
}
}