I ran a packet capture on PAN to try and figure out an intermittent problem with one of my GP 5.2.5.66 users (Windows, Surface Pro) where certain web based or internal applications will just start working. The external are Outlook O365, Teams for example. If he disables GP then everything starts working again. We verified he's connected to VPN during these periods of failure and narrowed to a DNS problem. When I ran a pcap on the PAN, I could see that his system was first sending a query for the expected domain
with the host - say scooper-p01.acme.com. But then the next packet would be trying to resolve scooper.hdcl.fl.comcast.net. So while his system was clearly connected to GP VPN (I couldn't have grabbed the packets otherwise), the presumed suffix was changing one DNS lookup to another. Has anyone seen anything like this? Any recommended fix?
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