
Since SSHD 1.7.0 unknown channel reference should be provided, otherwise session can crash, see this SSHD issue for more details: [1]. [1] https://issues.apache.org/jira/browse/SSHD-942 Bug: Issue 11491 Change-Id: Ic3d5f86ead0cf9669a3d73d6822ccd8b86114607