Bug 408551 – net-misc/networkmanager has iptables failure when connection sharing

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Andy Botting 2012-03-17 07:06:53 UTC]

When using NetworkManager for connection sharing, the following error message is displayed in the kernel messages file.

<info> Executing: /sbin/iptables --table nat --insert POSTROUTING --source 10.42.43.0/255.255.255.0 --destination ! 10.42.43.0/255.255.255.0 --jump MASQUERADE
<warn> ** Command returned exit status 2.

$ /sbin/iptables --table nat --insert POSTROUTING --source 10.42.43.0/255.255.255.0 --destination ! 10.42.43.0/255.255.255.0 --jump
Bad argument `10.42.43.0/255.255.255.0'
Try `iptables -h' or 'iptables --help' for more information.

The patch (thanks to Ignacio Aguilera) changes the ordering of the arguments to iptables to make this command valid. The correct syntax should look like (NOTE the ! is now moved in front of the --destination argument):

$ /sbin/iptables --table nat --insert POSTROUTING --source 10.42.43.0/255.255.255.0 ! --destination 10.42.43.0/255.255.255.0 --jump

I can confirm this patch works with 0.8.4.0-r2 and the Arch Linux report mentions it works with networkmanager-0.9.0-1.

Reproducible: Always

[Comment 1 Andy Botting 2012-03-17 07:07:53 UTC]

Created attachment 305673 [details, diff]
Connection sharing patch

[Comment 2 Pacho Ramos 2012-10-07 08:21:22 UTC]

Should be fixed in latest version
https://bugzilla.gnome.org/show_bug.cgi?id=658571