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split dns-support

Posted: Thu Jan 12, 2023 11:51 am
by izhmurikov
good afternoon.I'm trying to use the functionality split-dns

i want DNS queries which matches the domain names, are announce by server to remote client move through the tunnel (to the DNS server that are defined in config) while others do not (use system dns by isp/home network)

my software is openvpn ver 2.5.8 server + openvpn3 3.3.6 client (windows)

server.conf

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push "dhcp-option DNS 10.76.4.153"
push "dhcp-option DOMAIN xxx.ua"
option DOMAIN push to client

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SENT CONTROL [USERNAME]: 'PUSH_REPLY,topology subnet,route-gateway 10.226.152.1,route 10.0.0.0 255.0.0.0,dhcp-option DNS 10.76.4.153,dhcp-option DOMAIN xxx.au,ping 5,ping-restart 30,ifconfig 10.226.152.11 255.255.248.0,peer-id 0,auth-tokenSESS_ID,cipher AES-256-GCM' (status=1)
openvpn3 client receive option

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NRPT::ActionCreate names=[.xxx.ua] dns_servers=[10.76.4.153]

but all dns queries to .xxx.ua ( test1.xxx.ua, test2.xxx.ua ) don't send throught vpn tunnel (i see it on wireshark) , and go to dns on system network.

I would like to know if split dns by openvpn is supported?
can i do something wrong?

thanks in advance