wins-server none dns-server value 10.13.18.12 vpn-tunnel-protocol ikev2 ssl-client split-tunnel-policy tunnelspecified split-tunnel-network-list value Networks split-dns value xxx.com xxx.com split-tunnel-all-dns disable webvpn anyconnect profiles value InternalVPN_NV type user fasa5585-60x/act# This is the DNS server for my physical adapter

How to specify DNS on iOS when connected via VPN? - Ask The DNS settings over a VPN connection should be forced by the VPN server. This makes sure DNS queries get routed securely over the VPN, and allows you to see private services on the intranet that may not be exposed as public DNS records. VPN vs Smart DNS: Which Is Best For Accessing Region Jan 26, 2020

DNS doesn't work over VPN

Smart DNS Proxy | Unblock Web Sites & Digital Media Smart DNS Proxy is a versatile DNS service that allows you to unblock websites, access streaming services such as Netflix, Hulu, BBC iPlayer, Pandora, and many others. It works on any device, it is faster than VPN, and you can try it for FREE!

Whereas a VPN service masks your IP address so no one can figure out where you are, a different DNS service fools a website because it "thinks" you're eligible to access their content—in other words, under normal circumstances, they'd likely block your request if they saw that it had come from a DNS server in a restricted region.

Jun 18, 2020 What are your DNS server addresses? | NordVPN Customer Support