Out of Box Networking Issues, Guest VMs

davez5

New Member
Oct 15, 2025
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Complete noob here so bear with me. I was able to setup PVE, and get it talking with my DNS in Cloudflare to get a public cert. That along with being able to run updates and such, tell me that the networking on the PVE node is setup correctly. I have created a few VMs to see if it was the VM or config issues, all of them in Bridge mode. The VMs all get an IP from DHCP, and I can see them in my firewalls log as sending and receiving packets, yet the actual VM only appears to be able to send packets and not receive packets.

The VM can ping itself, 172.17.5.63 and it can ping the bridge adaptor on the PVE, 172.17.5.51, but it cannot ping the default gateway, 172.17.5.1 or further. I do see the packets going out the bridge adaptor as I can see them on my external firewall log. It's like the return traffic is not being allowed back in through the bridge to the VM.

Any thoughts or ideas on what to check?
 

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