Hello, I have VPN between openswan 2.4.4 and Cisco PIX - dpd enabled What this mean? Nov 30 12:36:55 gate1 pluto[5163]: "forme1" #4: R_U_THERE_ACK has invalid icookie Nov 30 12:36:55 gate1 pluto[5163]: "forme1" #4: R_U_THERE_ACK has invalid rcookie (tolerated) VPN works and DPD is detected. Can I ignore this warning? Thanks, Mitja