> The combination of the computer and switch together can be considered a router.
I have Mikrotik hAP ac2 in test for a few days. That is exactly something like this, 4 cores ARM for routing, switch attached for vlan'ed interfaces, plus wifi. And it is a real charm as performance and price. But it does not run OpenBSD and I miss the simplity of it mostly. This is how I was able to see the big difference compared to ISP router. I already have a Netgear managed switch around here, with VLAN capabilities. I think I will go for RPi4. Mark K. told me on arm@ that it lacks storage and hardware acceleration for crypto used in ipsec and maybe VPN, but I will not use it. I use only pppoe as a hardware challenger. Did you run RPi4 in this scenario, is there good throughput, please? What do you use as storage? Thank you.