Did you find a solution for your issue? I am running into the exact same scenrario. On our PAN device, we configured the DNS suffix in DHCP options to add it. But once the GP client connects and we check ip config the dns suffix is not there.
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We recently enabled/ configured/ deployed GlobalPortect on our PA firewall as a first step to replace our existing DirectAccess VPN solution. The GlobalProtect is a brand new installation, performed by a PaloAlto authorized consulting firm. We are piloting 3 business users and 5 IT, group users. Our 3 business users are complaining on a daily basis the VPN tunnel back to the office is very slow compared to the previous VPN solution which both traverses on the same firewall and same internet pipe bandwidth, which is 1.00Gbps so we know there is plenty of bandwidth. When we do a simple file transfer from the GlobalProtect client to an internal Windows File Server, the transfer of a 4.0 Gb is painfully slow to 3kpbs where when we perform the same test over the previous VPN is a heck of lot faster, way faster. I have a ticket opened with PaloAlto Support, but man I must say, they are useless, NOT happy at all with their lack of response back and forth. I am hoping someone here can assist me. Frustrating to say the least. Thanks everyone.
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