Here is what I get when routing to the DNS servers goes through the wrong interfaces. See bug #979067 for additional details on my setup.
Jun 25 12:50:51 dnsmasq[3799]: reading /var/run/dnsmasq/resolv.conf Jun 25 12:50:51 dnsmasq[3799]: using nameserver yy.yy.36.37#53 Jun 25 12:50:51 dnsmasq[3799]: using nameserver yy.yy.34.35#53 Jun 25 12:50:51 dnsmasq[3799]: using nameserver xx.xx.213.253#53 Jun 25 12:50:51 dnsmasq[3799]: query[A] www.google.fr from 127.0.0.1 Jun 25 12:50:51 dnsmasq[3799]: forwarded www.google.fr to xx.xx.213.253 Jun 25 12:50:51 dnsmasq[3799]: forwarded www.google.fr to yy.yy.34.35 Jun 25 12:50:51 dnsmasq[3799]: forwarded www.google.fr to yy.yy.36.37 Jun 25 12:50:51 dnsmasq[3799]: nameserver yy.yy.34.35 refused to do a recursive query -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/991308 Title: DNS Querying fails if any DNS server is unreachable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/991308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs