Red Hat Bugzilla – Bug 464495
Property "Disable NAT Traversal" not supported
Last modified: 2009-07-14 10:05:58 EDT
Description of problem: Since installing the latest updates (svn4022), I cannot connect with NM-vpn. Version-Release number of selected component (if applicable): NetworkManager-0.7.0-0.11.svn4022.fc9.i386 How reproducible: Steps to Reproduce: 1. VPN profile from previous release 2. Try to connect Actual results: /var/log/messages has the following: Sep 29 08:43:15 brilong-lnx NetworkManager: <info> Starting VPN service 'org.freedesktop.NetworkManager.vpnc'... Sep 29 08:43:15 brilong-lnx NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.vpnc' started (org.freedesktop.NetworkManager.vpnc), PID 3662 Sep 29 08:43:15 brilong-lnx NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.vpnc' just appeared, activating connections Sep 29 08:43:15 brilong-lnx NetworkManager: <info> VPN plugin state changed: 1 Sep 29 08:43:19 brilong-lnx NetworkManager: <info> VPN plugin state changed: 3 Sep 29 08:43:19 brilong-lnx NetworkManager: <info> VPN connection 'foo' (Connect) reply received. Sep 29 08:43:19 brilong-lnx NetworkManager: <WARN> nm_vpn_connection_connect_cb(): VPN connection 'foo' failed to connect: 'property 'Disable NAT Traversal' invalid or not supported'. Sep 29 08:43:19 brilong-lnx NetworkManager: <WARN> connection_state_changed(): Could not process the request because no VPN connection was active.
Ugh, not good. It's supported in the UI, edit the VPN connection and pick "Disabled" for NAT Traversal in the VPN tab for that connection. Any idea what should be the default? Cisco UDP?
Dan, this VPN profile worked fine in the previous F9 release of NetworkManager-vpnc. I had NAT traversal already set to disabled and it complains as above that the property is not supported. I'm running the following RPMS: vpnc-0.5.1-6.fc9.i386 wpa_supplicant-0.6.3-6.fc9.i386 NetworkManager-0.7.0-0.11.svn4022.fc9.i386 NetworkManager-glib-0.7.0-0.11.svn4022.fc9.i386 NetworkManager-vpnc-0.7.0-0.10.svn4024.fc9.i386 NetworkManager-gnome-0.7.0-0.11.svn4022.fc9.i386 It appears that something changed in NetworkManager and didn't get changed in NetworkManager-vpnc (or the opposite). Note the error: nm_vpn_connection_connect_cb(): VPN connection 'foo' failed to connect: 'property 'Disable NAT Traversal' invalid or not supported'. It sounds like the property used to be "Disable NAT Traversal". Now the property is "NAT Traversal" with choices of Disabled, Cisco-UDP or NAT-T.
Prior to the NM updates listed in the previous comment, my VPN connection worked and it had the following property: /system/networking/connections/12/vpn/Disable@32@NAT@32@Traversal It appears this property is now invalid, but there was not a transition to get rid of that property or migrate the property to the new name: /system/networking/connections/5/vpn/NAT@32@Traversal@32@Mode I created a new VPN connection with the same gateway and it works well. I believe NM needs to be enhanced to migrate obsolete properties to the new properties instead of erroring out.
vpnc hasn't supported the "Disable NAT Traversal" command since 0.3 so I'm not sure NAT traversal was ever disabled for you in either F8 or F9. What _might_ have happened was that with the latest updates, the default NAT traversal mode switched from "Cisco" to "NAT-T". But you're correct, that option should be migrated if present, it's a bug that it is not correctly interpreted.
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