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@bonifartius
This is what happens:

1) Internet is to be set up or fixed at a customer site or on customer equipment
2) IPv4 is configured
3) Ticket is closed

I've done dozens of turn-ups for small 1-2 employee stores that for some reason need a static IPv4 (and the local cable company will issue no smaller than a /30) even though there will never be an inbound connection to their greeting card store and/or muffler shop, and their firewall is going to just establish a connection to the chain's SD-WAN for outbound traffic anyway. At none of these sites has IPv6 been configured. They would do just fine behind CG-NAT, even.

Another fun phenomenon is that these circuits get turned over with identical circuits every few years. The old equipment is just left plugged in. As a gag I tried to use the static address written on each of three unused modems from the same cable provider connected to the same splitter. They all worked. They all had /30s. That tells me all of them were getting billed for.
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