I've tried tweaking with offload and currently have everything unchecked (enabled) except ALTQ support (I know it's advised to leave TSO and LRO checked, but experimenting at this point to resolve this). Some output of boot log if it's helpful is below. CPU stays around 34% utilization which leads me to believe this isn't a CPU-bound issue (I think). Running iPerf traffic through the appliance on one of the VLANs to a public iPerf server (using -R), I get around 562Mb/s with 141 retries. Having trouble routing over 750Mb/s out of the VLANs (igb1.x) towards the Internet (igb0). No routing between VLANs, all traffic from each VLAN hits the VLAN interface then gets 1:1 NAT'd to a public VIP on my /27 I have assigned from my ISP. Static IP directly on WAN (no PPPoE or any of that). Running 21 VLANs under igb1 with the parent/untagged interface not being used. Two interfaces being used, igb0 for WAN, igb1 for LAN. No packages except ACME for certs, no IPS/IDS or any of that. Just installed a Protectli FW4B with a Celeron J3160 and 8GB RAM running 2.7 CE. I've been spending the last 3 days trying to figure this one out.
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