vpnc error on connect

[OwL]

Hi,
when i try to connect to a IPSEC Cisco Vpn i get this error :

Error: either "to" is duplicate, or "ipid" is a garbage.
SIOCSIFMTU: Invalid argument

Vpn works, disconnect very often.
Im wondering if someone can help me fixing this.

Sabayon 6 gnome running

[popsUlfr]

Hi,
when i try to connect to a IPSEC Cisco Vpn i get this error :

Error: either "to" is duplicate, or "ipid" is a garbage.
SIOCSIFMTU: Invalid argument

Are you using the vpnc tool to connect (or cisco's own?) or are you setting up a vpn connection through networkmanager? It would help a lot if you wrote exactly what you did while setting up the vpn connection
'SIOCSIFMTU' -> Maybe an unsupported MTU size is set on your interface?
what's the output of

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ifconfig <yourinterfaceinuse>

(what's value at 'MTU:')
Not all network interface drivers support setting a higher MTU value of 1500 or anything besides 1500.
If the value is different of 1500 try to set it to the default with

Code: Select all

ifconfig <yourinterfaceinuse> mtu 1500

and see if you have better results now.

Vpn works, disconnect very often.
Im wondering if someone can help me fixing this.

Sabayon 6 gnome running

So connecting to your VPN is successful but the line is unstable? Raising the MTU size improves performance but you need a capable kernel driver. You may also start experimenting with a value of 9000 and going down (in 1000 decrements for instance) until the error goes away

Other than that it might also be a problem related to the MTU size of the "tunnel" interface 'tunl0'

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ifconfig tunl0

The MTU size of your tunnel needs to be <= the MTU size of your network interface if you want the information to fit through.