SSH Broken Pipe Announcing the arrival of Valued Associate #679: Cesar Manara ...
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SSH Broken Pipe
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)Resume rsync over SSH after broken connection?ssh tunneling broken pipe (for synergy)How to keep rsync over SSH connection permanent - no broken pipessh immediately disconnects “Write failed: broken pipe”SSH broken pipe kills foreground processHow to troubleshoot and diagnose “Write Failed: broken pipe” on SSH connection?ssh disconnect: broken pipeUbuntu Server 14.04 - How to fix openssh “broken pipe” remotely?Record the timestamp when Broken Pipe occurs?packet_write_wait: Broken Pipe error on MacOS Sierra SSH
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Background:
I’ve been researching a new problem that manifests as a dropped (broken pipe) connection during ssh sessions. Several forum searches turn up bug reports that seem to me are misdirected. The problem started for me when I upgraded to openssh 7.6 on Mac OS Mojave. During rsync backup sessions over ssh I started getting the broken pipe disconnects that never happened before. Apparently, openssh 7.6+ had a change where it started using DSCP (QoS) packets received during the session. From my research, the root cause points to the Comcast network sending malformed IPv4 DSCP packets, and this has been a problem for many years. Now, recent versions of openssh are trying to use this information and having trouble. A temporary workaround is to use a “IPQoS=throughput” setting in ~/.ssh/config.
Question:
Can anyone confirm this, and would this be considered a openssh bug (rather than other bug reports I’ve seen blaming other things)?
networking ssh rsync openssh qos
asked yesterday
John BenfordJohn Benford
12
New contributor
John Benford is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
Background:
I’ve been researching a new problem that manifests as a dropped (broken pipe) connection during ssh sessions. Several forum searches turn up bug reports that seem to me are misdirected. The problem started for me when I upgraded to openssh 7.6 on Mac OS Mojave. During rsync backup sessions over ssh I started getting the broken pipe disconnects that never happened before. Apparently, openssh 7.6+ had a change where it started using DSCP (QoS) packets received during the session. From my research, the root cause points to the Comcast network sending malformed IPv4 DSCP packets, and this has been a problem for many years. Now, recent versions of openssh are trying to use this information and having trouble. A temporary workaround is to use a “IPQoS=throughput” setting in ~/.ssh/config.
Question:
Can anyone confirm this, and would this be considered a openssh bug (rather than other bug reports I’ve seen blaming other things)?
networking ssh rsync openssh qos
asked yesterday
John BenfordJohn Benford
12
New contributor
John Benford is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
You have just said yourself that it's a Comcast network problem, haven't you?
– grawity
21 hours ago
Yes, but I’m not sure because I haven’t found bug reports on it for openssh.
– John Benford
11 hours ago
add a comment |
Background:
I’ve been researching a new problem that manifests as a dropped (broken pipe) connection during ssh sessions. Several forum searches turn up bug reports that seem to me are misdirected. The problem started for me when I upgraded to openssh 7.6 on Mac OS Mojave. During rsync backup sessions over ssh I started getting the broken pipe disconnects that never happened before. Apparently, openssh 7.6+ had a change where it started using DSCP (QoS) packets received during the session. From my research, the root cause points to the Comcast network sending malformed IPv4 DSCP packets, and this has been a problem for many years. Now, recent versions of openssh are trying to use this information and having trouble. A temporary workaround is to use a “IPQoS=throughput” setting in ~/.ssh/config.
Question:
Can anyone confirm this, and would this be considered a openssh bug (rather than other bug reports I’ve seen blaming other things)?
networking ssh rsync openssh qos
asked yesterday
John BenfordJohn Benford
12
New contributor
John Benford is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Background:
I’ve been researching a new problem that manifests as a dropped (broken pipe) connection during ssh sessions. Several forum searches turn up bug reports that seem to me are misdirected. The problem started for me when I upgraded to openssh 7.6 on Mac OS Mojave. During rsync backup sessions over ssh I started getting the broken pipe disconnects that never happened before. Apparently, openssh 7.6+ had a change where it started using DSCP (QoS) packets received during the session. From my research, the root cause points to the Comcast network sending malformed IPv4 DSCP packets, and this has been a problem for many years. Now, recent versions of openssh are trying to use this information and having trouble. A temporary workaround is to use a “IPQoS=throughput” setting in ~/.ssh/config.
Question:
Can anyone confirm this, and would this be considered a openssh bug (rather than other bug reports I’ve seen blaming other things)?
networking ssh rsync openssh qos
networking ssh rsync openssh qos
asked yesterday
John BenfordJohn Benford
12
New contributor
John Benford is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
John BenfordJohn Benford
12
New contributor
John Benford is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited yesterday
John Benford
asked yesterday
John BenfordJohn Benford
12
New contributor
John Benford is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
John BenfordJohn Benford
12
asked yesterday
John BenfordJohn Benford
12
12
New contributor
John Benford is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
John Benford is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
John Benford is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
You have just said yourself that it's a Comcast network problem, haven't you?
– grawity
21 hours ago
Yes, but I’m not sure because I haven’t found bug reports on it for openssh.
– John Benford
11 hours ago
add a comment |
You have just said yourself that it's a Comcast network problem, haven't you?
– grawity
21 hours ago
Yes, but I’m not sure because I haven’t found bug reports on it for openssh.
– John Benford
11 hours ago
You have just said yourself that it's a Comcast network problem, haven't you?
– grawity
21 hours ago
You have just said yourself that it's a Comcast network problem, haven't you?
– grawity
21 hours ago
Yes, but I’m not sure because I haven’t found bug reports on it for openssh.
– John Benford
11 hours ago
Yes, but I’m not sure because I haven’t found bug reports on it for openssh.
– John Benford
11 hours ago
add a comment |
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You have just said yourself that it's a Comcast network problem, haven't you?
– grawity
21 hours ago
Yes, but I’m not sure because I haven’t found bug reports on it for openssh.
– John Benford
11 hours ago