Patent ID: 8825859

Claim:
A method for Global Server Load Balancing of co-existing IPv4 and IPv6 services for a domain, the method comprising: (a) executing, by a device intermediary to a plurality of a clients and a plurality of servers, a first global server load balancing (GSLB) virtual server for global load balancing a plurality of IPv6 based services for a site domain name; (b) executing, by the device, a second global server load balancing (GSLB) virtual server for global load balancing a plurality of IPv4 based services for the same site domain name as the first GSLB virtual server; (c) receiving, by the device from a client of the plurality of clients, a domain name system (DNS) query; (d) determining, by the device, a type of the DNS query; and (e) forwarding, by the device, the DNS query to one of the first GSLB virtual server or the second GSLB virtual server based on the determined type.