Passing ISP DNS Servers though via DHCP

Is there a way to configure DNSMasq to automatically expose the DNS servers received via DHCP from my ISP rather than itself?

When my mac reconnects to my WRT1900ACS running the davidc502 build, I often get no DNS responses for 5-10 seconds.

Hi. As far as I know there is no such facility available in dnsmasq. Someone asked a similar question on the dnsmasq mailing list a few years ago and the responses do not seem to indicate any solution: http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2013q1/006887.html

You can however hardcode the DNS server to either your ISP ones or some globally reachable servers like Googles 8.8.8.8.

To achieve that, add something like option dhcp_option 6,8.8.8.8,8.8.4.4 to your config dhcp lan section in /etc/config/dhcp and restart the dnsmasq service afterwards.