Apply dns servers only if no vpn option is true

https://github.com/alexbelgium/hassio-addons/issues/2449

.templates/90-dns_set.sh

@@ -9,6 +9,7 @@ set -e
 # Avoid usage of local dns such as adguard home or pihole\n"
 
 if bashio::config.has_value 'DNS_server'; then
+    if  ! bashio::config.is_true "openvpn_enabled" && ! bashio::config.is_true "wireguard_enabled"; then
         # Define variables
         DNSSERVER=$(bashio::config 'DNS_server')
         DNS=""
@@ -37,7 +38,9 @@ if bashio::config.has_value 'DNS_server'; then
         else
             bashio::log.warning "No valid DNS were found. Using default router (or HA) dns servers."
         fi
-
+    else
+        bashio::log.warning "DNS servers are enabled but a vpn is enabled. Resolv will be handled through the vpn script"
+    fi
 else
     bashio::log.info "DNS Servers option empty. Using default router (or HA) dns servers."
 fi