Hi, With the 20100127 snapshot, there appears to be a bug in the multiplexing support that causes the master to die under some circumstances when a slave session exits. The error messages that I am getting are: cfe1.imorgan> exit Connection to cfe1 closed. $ channel_by_id: 2: bad id: channel free client_input_channel_req: channel 2: unknown channel channel_by_id: 2: bad id: channel free Disconnecting: Received oclose for nonexistent channel 2. This is triggered by using a multiplexed connection to a bastion host and a ProxyCommand (similar to netcat) associated with the slave session to reach the host behind the bastion. However, a slave connection to the same bastion does not exhibit this problem, which makes me suspect that it has to do with the use of a ProxyCommand over the muxed session. The same configuration worked fine with 5.3p1. -- Iain Morgan
On Tue, 26 Jan 2010, Iain Morgan wrote:> Hi, > > With the 20100127 snapshot, there appears to be a bug in the > multiplexing support that causes the master to die under some > circumstances when a slave session exits.Could you try to catch this with both the master and slave in debug mode? "ssh -ddd" I'll see if I can find it in the meantime. Thanks, Damien
Possibly Parallel Threads
- Possible issue with stdio forwarding
- Host key verification (known_hosts) with ProxyJump/ProxyCommand
- Slow connects due to out-of-context DNS lookup
- [Bug 1039] Incomplete application of HostKeyAlias in ssh
- [Bug 3095] New: SSH CA-signed key fails when port forwarding