I've noticed that while mapping Sharepoint with all needed configs enabled, 

Some people still cannot map their Sharepoint drive, 

If the Customer has Comcast, I normally disable IPv6 and enter a manual dns server of 8.8.8.8 with the secondary being what they obtain automatically, 

Works like a charm, Google only has one IPv6 address according to nslookup, so when I ran a nslookup, it was running off the IPv6 DNS, instead of the IPv4

which digs up more than 12 addresses for google.com.