I upgrade one of my systems to 11.4
I can no longer send ZFS file systems to machines still running 11.3
server114# zfs send SomePool1/SomeThing@123 | ssh root@server113 zfs receive SomePool1
cannot receive: stream has unsupported feature, feature flags = 0xa4
warning: cannot send 'SomePool1/SomeThing@123': Broken pipe
The zfs and zpool versions are not higher on the 11.4 machine than the 11.3 machine.