FIRST: When FAH wants to download a new WU, it always attempts to connect to assign1.foldingathome.org and/or assign2.foldingathome.org from which it should be redirected to a Work Server. Check your network settings and redirections. FAH DID NOT assign 192.0.2.1 -- especially since that is a local address which cannot be forwarded by your router.
SECOND: Inasmuch as you will not be getting assignments for your GPU until AMD fixes their software, you should disable FAH's ability to run your GPU slot. There are several ways you can do that. I would use FAHControl: Configure + Slots + (select the GPU slot) + Add + Add + pause-on-start / true / OK + OK + Save,
You can still manually stop or start that slot until the next reboot.