Proxmox: WAN NIC passthrough issue with 2.5G connection to fiber router
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 Which of those, if any, is the WAN gateway? If it is it's a long way from the WAN IP or a huge subnet. That doesn't look like it's necessarily a conflict though. One MAC address could be associated with all those IPs. 
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 @stephenw10 
 the wan gw is 100.68.0.1 42:9e:a4:3c:8e:2b
 i can see it in the arp table before and after I lose internet
 but sometimes I get incomplete instead of MAC
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 Hmm, if it shows 'incomplete' then it's unable to get the gateway MAC which implies a layer2 failure. Where is the gateway in this case? Remote, at the ISP? It does seem like you might be hitting an issue with the NIC though. 
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 @stephenw10 
 i believe the gw is remotely at the isp.
 all I have at home is a fiber box that seems unmanaged
 is there a way to set static arp?
 how would I validate a hw nic failure?
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 I've yet to see the i225 disconnect issues that are relatively well known but as I understand it they usually show as the NIC losing link which I don't think you're seeing? I would run a pcap on it in the failed state and see if it's actually passing packets at all. 
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 @stephenw10 that s one of the capture packetcapture-igc0-20241212183144.pcap 
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 Hmm, so no incoming traffic at all. Have you tried running it as not pass-through so pfSense just sees it as vtnet? 
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 @stephenw10 i was non-passthrough and had issues hence moving to passthrough 
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 What sort of issues? Similar connection failures? 
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 @stephenw10 yes, loss of internet 
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 Hmm, that does start to look like a NIC issue then if it fails the same way with the Linux driver. 
