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I am having issues with ClearOS on Oracle VirtualBox and the problem is intermittent.
Here are a list of symptoms:
* The network drops out intermittently and there is no communication between the virtual guest and the host. Ping fails in either direction, guest to host and host to guest. The host does not have issues with the gateway device when this does happen.
* Some times there is internal communication but no external communication. I can't ping external IPs but can ping the gateway/local IPs on the virtual machine. On the host PC, I can ping the gateway and still have access to the Internet.
* DNS intermittently drops out and now it has completely dropped out. When this happens I try ping the external IP/local IPs and most of the time there is a response.
Here's a list of things I have tried:
Issue occurs on multiple computers, I have purchased a separate computer but the problem is still present. The current machine is a Dell Optiplex 990 and the previous PC was a custom machine.
* I have replaced NICs and the problem occurs on multiple network interface card.
* Re-downloaded ClearOS, checked the integrity of the image and re-installed the guest machines.
* Re-installed Windows 10 on the host machine and setup Oracle once again.
* ADSL2+ modems and routers have been replaced also. Channels have been set manually and for auto-sense.
Please let me know if there's anything else I can look at. -