I’ve been searching the Internet for a few days with no luck for a router board or maker board I can install ZeroShell on that has at least 4 ethernet ports (Preferably 5) and wifi, This would be easy for ARM but ZeroShell doesn’t work on ARM.
You can get dirt cheap Intel based NICs from the ebay, if that’s an option.
I bought a PCIe 1x Intel based GB NIC for like 6 bucks for my build.
The multiport NICs will ring you more, but still a viable option to a fully integrated mainboard.
Keep in mind that many of these new x86 SOC boards are often designed for Windows 8/10 and use a UEFI without a Legacy BIOS option such as the Latte Panda. Trial an error may be your best approach as it’s often difficult to get a response from these cheap manufacturers about such things.