linux - How to avoid extra shell when ssh -f? -

linux - How to avoid extra shell when ssh -f? -

if do

ssh -f 10.10.47.47 "/opt/omni/bin/mbuffer -4 -v 0 -q -i 8024 | /usr/sbin/zfs receive tank/test"

then have press ctrl-d exit shell have been spawned on linux host, ran ssh command.

if do

ssh -f 10.10.47.47 "sleep 10s"

and seek ctrl-d linux host hangs until sleep command exits on remote host. weird behaviour, wouldn't expect since -f used.

question

is possible avoid shell on host ssh command executed?

linux bash networking ssh solaris