When the enterprise domain is configured, the DNS resolution for domain names
in the enterprise domain list is forwarded to the default Corporate DNS server of the client.
The DNS resolution for all other domains is forwarded to the local DNS server of the AP's
uplink learned DNS server.
For example, if the enterprise domain is configured for arubanetworks.com, the DNS resolution
for host names in the arubanetworks.com domain is forwarded to the default DNS server of the client.
The DNS resolution for domain names in all other domains is forwarded to the local DNS server of the IAP.
This Split DNS functionality is supported for IAP-VPN scenarios only.
AOS8x IAP-VPN will use the enterprise domains list to split-dns, However AOS10x uses redirect
list with server ip address and domains for DNS resolutions same as BGW.