We use cookies on our website to ensure we provide you with the best experience on our website. By using our website, you agree to the use of cookies for analytics and personalized content.This website uses cookies. More Information
It seems like your browser didn't download the required fonts. Please revise your security settings and try again.
Barracuda NextGen Firewall X

Log message "csum failure" reported in klogd.log

  • Type: Knowledgebase
  • Date changed: 6 months ago
Solution #00005132 
 
Scope:
This solution replies to:
- NG Firewall firmware versions 4.2.x,5.0.x, 5.2.x
- netfence firmware versions 4.2.x

 
Symptoms:

The following error message is reported in the log file klogd (Box menu entry "Log" > "Box" > "System" > "klogd.log":

 

Info        kernel: udp v4 hw csum failure<notice lines> 


 

Solution:

This log entry can have following causes:

  - The network interface card is receiving corrupt data on Ethernet level.
  - The network interface card driver is generating errors during checksum calculation.

 

Processes causing this error message have no harmful effect on the running system. Deactivation of HW checksumming will stop the message recording, if faulty checksum calculation has been the cause. If deactivation of HW checksumming is possible, depends on the available network interface card driver options.

 

Example:
Deactivation of HW checksumming for the e1000 driver:
Option: XsumRX=0  (0=off, 1=on)

 

Deactivation of HW checksumming for the e100 driver:
Option: XsumRX=0  (0=off, 1=on)

 

 

Link to This Page:
https://campus.barracuda.com/solution/50160000000IKYnAAO