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Re: [libvirt] --checksum-fill error on Ubuntu 10.04

 On 10/25/2010 07:43 PM, Justin Clift wrote:
Hi us,

Just noticed an error message when manually starting libvirtd (built
from git) on Ubuntu 10.04, while checking something else:

   iptables v1.4.4: unknown option `--checksum-fill'

It shows up in the initial default network setup:

Yes, this is a known issue (I won't say "problem", because it indicates no ill effects until the OS in question supports vhost-net).

This message is due to Ubuntu not having a recent enough version of iptables, and is informational only. Unless you are using vhost-net networking (which I'm guessing Ubuntu also does not yet have) under specific conditions, the lack of --checksum-fill will not have any ill effects.

For more detailed info, see the similar bug report for Fedora:


and on RHEL:


   10:40:19.807: error : virRunWithHook:855 : internal error
'/sbin/iptables --table mangle --insert POSTROUTING --out-interface
virbr0 --protocol udp --destination-port 68 --jump CHECKSUM
--checksum-fill' exited with non-zero status 2 and signal 0: iptables
v1.4.4: unknown option `--checksum-fill'
Try `iptables -h' or 'iptables --help' for more information.

Just a FYI, in case someone wants to look into it.

Regards and best wishes,

Justin Clift

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