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@@ -8,7 +8,7 @@ LAN: the internal network for computers, phones, cameras, printers, etc (NIC 1)
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Device Passthrough# For maximum performance and reduced hypervisor overhead, passing through a physical NIC for WAN directly to the VM seemed to make the most sense, so I passed it through to the OPNsense VM.
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I added the PCI device and restarted the OPNsense VM and re-configured the WAN in OPNsense to use this device.
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I received the WAN IP and everything appeared to be working. I ran a few speed tests and noticed that the download speeds were a lot lower than normal on multiple devices. I checked my instance of speedtest-tracker noticed that the download speeds were significantly slower than historical records:
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These speeds tests were going through a Mullvad (which occasionally dips), but the results were too consistently low to be a coincidence.
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These speeds tests were going through Mullvad, which occasionally is inconsistent, but the results remained consistently lower than the previous configuration.
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I reverted the WAN back to the original NIC, and the download speeds returned to more average results immediately so it became obvious that something was not right with this setup.
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Realtek drivers# I did some web searching / LLM prompting and discovered that some people have had improved results after installing the OPNsense plugin os-realtek-re.
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After installing the plugin and ensuring the kernel module was loaded at boot by following the post-install instructions, the throughput was still signicantly slower than before adding a second NIC.
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