Specifies whether
.Xr ssh 1
should terminate the connection if it cannot set up all requested
dynamic, tunnel, local, and remote port forwardings.
dynamic, tunnel, local, and remote port forwardings, (e.g.\&
if either end is unable to bind and listen on a specified port.)
Note that
.Cm ExitOnForwardFailure
does not apply to connections made over port forwardings and will not,
for example, cause
to exit if TCP connections to the ultimate forwarding destination fail.
The argument must be
.Dq yes
or