yeha sorry already readit well, I had already marked everything 
but i returned it to the original state marking only "all servers"
To avoid confusion, I eliminated the 2 DHCP/DNS IPs that initially had 8.8.8.8/1.1.1.1 and that when I changed it to the pihole ones, changes were never seen, so I think they do not work but I had left them, so now I eliminated them to avoid confusion
now i have the interface>lan>edit>dchp server>advence setting like this and now it getting the two dns servers
when i get each ip in a in a new line seem that isnt working, y que por alguna razon agarra the x.x.x.42 ip 
but when i getting both in a single line it worked 6,10.172.1.39,10.172.1.42 i don't know why
