[FS#3759] Idle ssh Connection exits with: client_loop: send disconnect: Broken pipe

OpenWrt Bugs openwrt-bugs at lists.openwrt.org
Sun May 2 23:47:43 BST 2021


The following task has a new comment added:

FS#3759 - Idle ssh Connection exits with: client_loop: send disconnect: Broken pipe
User who did this - Greg Dietsche (farmergreg)

It seems that wireguard in 21.02.0-rc1 might be part of the cause. 

SSH without wireguard is working fine for me when using the RC candidate.

SSH over a wireguard tunnel is where I start seeing the "client_loop: send disconnect: Broken pipe " error messages.

Network Diagram:

machine1  OpenWRT A  internet  OpenWRT B  wireguard  machine2

The wireguard vpn is a site to site link. Both routers involved are running openwrt. Both have ports open so that either router can initiate the wireguard tunnel.

I am able to quickly and easily switch between 19.07.7 and 21.02.0-rc1 on OpenWRT router "A". 19.07.7 works great and ssh connections appear to stay alive indefinitely. 21.02.0-rc1 has the "client_loop: send disconnect: Broken pipe" problem and ssh connections typically die in less than an hour.


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