The last time I checked, the Raspberry Pi was considered unsuitable for use as an internet middlebox (or router) due to some kind of I/O bottleneck, having to d

The last time I checked, the Raspberry Pi was considered unsuitable for use as an internet middlebox (or router) due to some kind of I/O bottleneck, having to do with (pardon the faded memory) its ethernet controller being attached to its USB controller instead of directly to whatever ARM's PCIe-analogue is, as well as its USB controller being a blob-encumbered Broadcom hunk-o'-jank. Has this changed recently? EDIT: Answer: probably not, but that's irrelevant because this Pi-hole appliance apparently just does DNS, not full traffic routing. Makes reasonable performance possible, at the cost of granularity.