To configure DNS Proxy
From the DNS Proxy Mode options, choose the IP version for sending/receiving DNS Proxy packets between the firewall and the DNS Servers:
IPv4 to IPv4 (default)
IPv4 to IPv6
DNS Proxy protocol is an advanced setting. For more information about configuring this setting, contact SonicWall Technical Support.
To configure Split DNS servers, refer to Configuring Domain-Specific DNS Servers for Split DNS.