Same error in my log:
Sep 11 16:12:42 NET01 pluto[28578]: packet from 79.235.29.25:500: received Vendor ID payload [Dead Peer Detection]
Sep 11 16:12:42 NET01 pluto[28578]: packet from 79.235.29.25:500: received Vendor ID payload [RFC 3947]
Sep 11 16:12:42 NET01 pluto[28578]: packet from 79.235.29.25:500: ignoring Vendor ID payload [draft-ietf-ipsec-nat-t-ike-03]
Sep 11 16:12:42 NET01 pluto[28578]: packet from 79.235.29.25:500: ignoring unknown Vendor ID payload [a2226fc364500f5634ff77db3b74f41b]
Sep 11 16:12:42 NET01 pluto[28578]: packet from 79.235.29.25:500: initial Aggressive Mode message from 79.235.29.25 but no (wildcard) connection has been configured with policy PSK+AGGRESSIVE+IKEV1_ALLOW
I don´t know what to do.