Ubuntu
linux package

  1. Bug #1801574
  2. Comment #4

Comment 4 for bug 1801574

Revision history for this message
Tyler Hicks (tyhicks) wrote :

Hello Talat - You said that this test passes on the 18.04 LTS kernel so it is worth nothing that the commit you identified is also present in that kernel. It was released in 4.15.0-32.34:

  https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic/commit/?id=77a24c313d21e3765b04d90521e9228a9bb6e332

All that patch does is change the defaults of the following two sysctls:

  /proc/sys/net/ipv4/ipfrag_high_thresh
  /proc/sys/net/ipv4/ipfrag_low_thresh

To temporarily go back to the old defaults (you'll lose these changes on reboot), you can run the following commands (be sure to run them in this order):

$ echo 4194304 | sudo tee /proc/sys/net/ipv4/ipfrag_high_thresh
$ echo 3145728 | sudo tee /proc/sys/net/ipv4/ipfrag_low_thresh