I have configured 3 public ip pool in one interface of mikrotik and 2 ip pool are configured as /29 and another one is /28. But the problem is here with /28 subnet and I am not having any problems with /29 but when I am giving any ip to our user from /29 ip pool in that case the users are not getting the Dns ping but when I connect that ip from direct interface of mikrotik in that case there is no problem but when I connect that from our switch there is the problem with Dns but gateway is pinging successful.what is the wrong with this activity??