Let's say I want to set up 16 frontend firewall/load-balancers.

In aggregate they will serve/distribute 34 GB/s.

This is a business-critical workload.

Would you put this on OpenBSD? And if so, who would you call when it breaks?

Would you put this on FreeBSD? And if so, who would you call when it breaks?

We put this on Linux. And we can Red Hat when it breaks.

It has broken for us in the past. And we get absolutely top-notch Linux kernel TCP experts on the phone to help us fix the issues in no time.