Problem with freeswan after 2.4.19 kernel update

Hi list, Since updating our SuSE 8.1 VPN gateway with the latest 2.4.19 kernel update (k_deflt-2.4.19-329), users are reporting problems creating IPsec connections. The following message is repeated in the log during the connection attempt: Jul 27 19:31:50 ns2 kernel: ; found spi=0xb295d8a5, dst=xx.xx.xx.xx, proto=3/ESP Jul 27 19:31:50 ns2 kernel: ipsec4_rcv: incoming packet failed policy check; dropped ... (repeated) ... Any ideas how to fix this? Regards, Michael