[Openswan Users] INVALID_SPI

[Mitja Sladovic]

VPN beetwen openswan 2.3.1 and cisco VPN 3000 series

Tunnel works OK, but after some time I got this repeating error - and I 
don't get any traffic through the tunnel:

May 18 08:37:09 vpnbox pluto[26741]: "cisco" #353: ignoring 
informational payload, type INVALID_SPI
May 18 08:37:09 vpnbox pluto[26741]: "cisco" #353: received and ignored 
informational message
May 18 08:37:12 vpnbox pluto[26741]: "cisco" #353: ignoring 
informational payload, type INVALID_SPI
May 18 08:37:12 vpnbox pluto[26741]: "cisco" #353: received and ignored 
informational message
May 18 08:37:37 vpnbox pluto[26741]: "cisco" #353: ignoring 
informational payload, type INVALID_SPI
May 18 08:37:37 vpnbox pluto[26741]: "cisco" #353: received and ignored 
informational message

Any hints, what's causing this problem?

Thanks, Mitja