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I am running PFsense C.A.R.P. the problem only started when i switched to to the Carp cluster, if i migrate back to a single PFsense box it works fine.
i need to eventually retire the single PFsense box, but currently changing the gateway for the RDP host box to the single PFsense box is my only work around.
there has to be some way for this to work, i had it working with a previous CARP setup on an older version of PFsense CARP