irule for snat pool and data group and pool member

Give this a whirl.

when CLIENT_ACCEPTED {
    if { [class match [IP::client_addr] equals dg_test] }{
        pool pool_test member 10.10.10.2
        snat 10.10.10.1
    }
    else {
        pool pool_test member 20.20.20.2
        snat 20.20.20.1
    }
}