Cannot connect on 3g or edge, wifi works fine about get-a-robot-vpnc HOT 8 OPEN

I have experienced this issue from the time I first started using this app. VPN 
over 
Wifi connects up without issues but when I try to connect over a cell tower I 
usually 
get a "failed to connect". However it does connect up sometimes and I can VPN 
on my 
laptop while i'm tethering for now. Thanks for all the hard work on this app. 

Okay, I figured it out. For anyone else that has this issue, do the following. 
In the 
main menu of VPN Connections, press the menu button, an option for VPN flags 
should 
appear, select it and type "--natt-mode cisco-udp" (without quotes). Select OK 
and you 
should be good to go.

[deleted comment]

We are on Cisco Concentrator but --natt-mode cisco-udp DOES not work for me 
across 3G (works on WiFi)

Had to use -natt mode force-natt

Works every time on WiFi and 3G...

I do not get the option to add flags when I press the menu button... is there a 
way to launch this from the command line?

No Way! The "--natt-mode cisco-udp" arguments got it to work on my epic 4g 
running a custom froyo ROM! Too cool! But I still have to reload the tun.ko 
after a reboot. Any assistance with getting it loaded in a startup would be 
greatly appreciated.

you can do it just modify the source code,
for samsung tab i am doing 
if( !new File("/dev/net/tun").exists() )
            {
                //try to create for samsung tab
                Util.debug( "tun does not exist" );
                Util.debug( "trying insmod /sdcard/tun.ko " );
                Util.writeLine( os, logWriter, "insmod /sdcard/tun.ko" );
                Util.debug( "trying lsmod " );
                Util.writeLine( os, logWriter, "lsmod" );
                Util.debug( "trying mkdir /dev/net " );
                Util.writeLine( os, logWriter, "mkdir /dev/net" );
                Util.debug( "trying ln -s /dev/tun /dev/net/tun " );
                Util.writeLine( os, logWriter, "ln -s /dev/tun /dev/net/tun" );
                if( !new File("/dev/net/tun").exists() ){
                vpnc.setConnected( false, info );
                this.connectionInProgress = null;
                }
            }

does not work on 3G, edge
--natt-mode cisco-udp or --natt-mode force-natt
with Cisco vpn concentrator
but works fine with wifi.