I use "push dhcp-option DNS..." option to give DNS to client, works
great. But when connecting client log shows local backup DNS:
Nov 14 01:14:22 mara dnsmasq[2719]: reading /etc/resolv.conf
Nov 14 01:14:22 mara dnsmasq[2719]: using nameserver 10.10.15.1#53
Nov 14 01:14:22 mara dnsmasq[2719]: using nameserver 192.168.0.1#53
Nov 14 01:14:22 mara dnsmasq[2719]: using nameserver
2602:411:23da:210::1#53
The last two are for local home router. I read that –resolv-retry
default is infinite however I think I saw behavior when a client falls
back to local DNS when DNS query failed on OpenVPN host(server). I'm not
sure but maybe the DNS response came back NXDOMAIN so client tried its
other DNS servers.
I want to invalidate all local DNS lookups to be sure no leaking. I want
to do it in the OpenVPN config if possibl. (client or server)
Any tips please? thank you kindly.
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