I am beginer. I have D-Link DIR-615 with DD-WRT firmware, it works fine. I want to change it to MikroTik RB951Ui-2HnD, but it not works good. For some minutes it work but after some minutes I can not connect to internet.
At the image I show my configuration at DD-WRT, and on the second image configuration on MikroTik.
Where I make mistake?
Can someone send me screenshots with this corrent configuration in MikroTik? Or backup with configuration for me.
Is DNS compulsorily?
Sorry if my question is stupid 
Thank you for your help.
Look at this website en try this.
In dutch but look at printscreens a made
http://www.wirelessinfo.be/index.php/mikrotik/pages/dns
You must reconfigure the DHCP server with as first DNS-server the IP-address of your router
if you already have dhcp-serve configured, you can head over to /ip dhcp-server network and configure entry there, set router ip as a dns address. Renew dhcp lease on the host.