SSH broken pipe on macOS Catalina

How to fix the broken pipe error when using SSH on macOS

SSH broken pipe on macOS Catalina

After upgrading to macOS Catalina 10.15.3 last night, I noticed that I was no longer able to log in to my OVH Cloud instance, as well as Github using git, but instead just got the error: packet_write_wait: connection to x.y.z. port 22: broken pipe

What was even weirder was that SSH to my internal machines did work without any issues.

So Google to the rescue! I spent a few hours looking around and ended coming across this post on VMWare's forums which described the exact same problem and proposed simple solution, just adding -o IPQoS=throughput to your normal ssh command. So something like the following:

ssh -o IPQoS=throughput root@

Don't forget, you can add the following to your ~/.ssh/config so that you don’t have the use the -o flag every time as well as have any other command using SSH use that flag:

Host *