Cisco still produces brand new equipment without IPv6 support. It's not only routers, much of the rest of the networking stack needs IPv6 to be enabled as well.
We mistakenly had the same notion that "why would a new line of Cisco wireless equipment not have IPv6". That pushed back a network upgrade of a remote office a few months. Our mistake really, we should have checked.
Of manufacturers, like Kyocera, have equipment that technically supports IPv6, but no-one really knows who to configure it. IBM have a software product which is IPv6 capable, or it was when they did the initial implementation in 2012. Later versions just sort of shipped with broken IPv6, because IBM doesn't actually test in new releases.
We mistakenly had the same notion that "why would a new line of Cisco wireless equipment not have IPv6". That pushed back a network upgrade of a remote office a few months. Our mistake really, we should have checked.
Of manufacturers, like Kyocera, have equipment that technically supports IPv6, but no-one really knows who to configure it. IBM have a software product which is IPv6 capable, or it was when they did the initial implementation in 2012. Later versions just sort of shipped with broken IPv6, because IBM doesn't actually test in new releases.