Tips for getting cheap used x86-based firewall with full Gbit NAT (a PC Engines APU) if you are in the US

So I have a VeloCloud Edge 540-AC and a 500-N now. Following are what I have discovered one the
Edge 540-AC more to follow later. I will be creating a WikiDevi entry sometime this week.

Relevant sections of bootlog:

Using coreboot

Sage_coreboot-4.0-VELOCLOUD-EDGE-01.00.00.05 Fri Apr 27 14:21:51 PDT 2018 starting...
Mainboard: Mohon Peak Version 2.0
Build: SageBios_Mohon_Peak - 292
Detected C0 stepping SOC

CPU info

Initializing CPU #0
CPU: vendor Intel device 406d8
CPU: family 06, model 4d, stepping 08
Enabling cache
CPU: Intel(R) Atom(TM) CPU  C2558  @ 2.40GHz.

Kernel booting

Booting the kernel.
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.14.79 (ubuntu@ip-10-81-127-108) (gcc version 4.8.3 (OpenWrt/Linaro GCC 4.8-2014.04 r43222) ) #1 SMP Sat Feb 9 10:13:00 UTC 2019
[    0.000000] Command line: BOOT_IMAGE=/vmlinuz root=PARTUUID=2E18F5AA-72F9-428D-B240-A4E243F57A31 rootfstype=ext4 rootwait earlyprintk=serial,ttyS1,115200 panic_timeout=5 console=ttyS1,115200n8 noinitrd vcimg=1 crashkernel=2G-:128M

Networking probe

[    5.578189] Distributed Switch Architecture driver version 0.1
[    5.584741] eth0[0]: detected a Marvell m88e6176 switch
[    5.650064] libphy: dsa slave smi: probed
[    5.686057] igb 0000:00:14.0: added PHC on eth0
[    5.691138] igb 0000:00:14.0: Intel(R) Gigabit Ethernet Network Connection
[    5.698921] igb 0000:00:14.0: eth0: PBA No: 002100-000
[    5.704680] igb 0000:00:14.0: Using MSI-X interrupts. 4 rx queue(s), 4 tx queue(s)
[    5.814264] igb 0000:00:14.1: found custom link: 0x3558
[    5.859314] libphy: mdio-dsa: probed
[    5.863470] eth1[0]: detected a Marvell m88e6176 switch
[    5.928759] libphy: dsa slave smi: probed
[    5.966906] igb 0000:00:14.1: added PHC on eth1
[    5.971992] igb 0000:00:14.1: Intel(R) Gigabit Ethernet Network Connection
[    5.979773] igb 0000:00:14.1: eth1: PBA No: 002100-000
[    5.985525] igb 0000:00:14.1: Using MSI-X interrupts. 4 rx queue(s), 4 tx que
[    6.095016] igb 0000:00:14.2: found custom link: 0x3558
[    6.452283] igb 0000:00:14.2: added PHC on eth2
[    6.457369] igb 0000:00:14.2: Intel(R) Gigabit Ethernet Network Connection
[    6.465159] igb 0000:00:14.2: eth2: PBA No: 002100-000
[    6.470916] igb 0000:00:14.2: Using MSI-X interrupts. 4 rx queue(s), 4 tx queue(s)
[    6.480685] igb 0000:00:14.3: found custom link: 0x3558
[    6.838624] igb 0000:00:14.3: added PHC on eth3
[    6.843712] igb 0000:00:14.3: Intel(R) Gigabit Ethernet Network Connection
[    6.851501] igb 0000:00:14.3: eth3: PBA No: 002100-000
[    6.857271] igb 0000:00:14.3: Using MSI-X interrupts. 4 rx queue(s), 4 tx queue(s)
[    7.209803] igb 0000:04:00.0: added PHC on eth4
[    7.214898] igb 0000:04:00.0: Intel(R) Gigabit Ethernet Network Connection
[    7.222615] igb 0000:04:00.0: eth4: (PCIe:5.0Gb/s:Width x1) f0:8e:db:0e:11:3e
[    7.230701] igb 0000:04:00.0: eth4: PBA No: 106300-000
[    7.236466] igb 0000:04:00.0: Using MSI-X interrupts. 4 rx queue(s), 4 tx queue(s)
[    7.589170] igb 0000:04:00.1: added PHC on eth5
[    7.594264] igb 0000:04:00.1: Intel(R) Gigabit Ethernet Network Connection
[    7.601982] igb 0000:04:00.1: eth5: (PCIe:5.0Gb/s:Width x1) f0:8e:db:0e:11:3f
[    7.610068] igb 0000:04:00.1: eth5: PBA No: 106300-000
[    7.615832] igb 0000:04:00.1: Using MSI-X interrupts. 4 rx queue(s), 4 tx queue(s)

This looks like OpenWrt

[    8.759370] user: clean, 120/280000 files, 156341/1115904 blocks
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
mounting /dev/ro[   11.815647] EXT4-fs (sda4): re-mounted. Opts: (null)
ot

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