IPSEC_INBOUND_SA_MISS

Hi all,

I found a lot of IPSEC_INBOUND_SA_MISS messages on AR. May I know the main cause of this message appearing?

xx.xx.10.2, SPI: 4864313, Protocal: esp) Oct 23 2020 01:04:07+00:00 DISJAYA-VPN-ROUTER %IPSEC/5/IPSEC_INBOUND_SA_MISS(l)[20152249]:Received an inbound sa miss message. (Source address: 10.81.36.189, Destination address:

xx.xx.10.2, SPI: 5533528, Protocal: esp) Oct 23 2020 01:04:07+00:00 DISJAYA-VPN-ROUTER %IPSEC/5/IPSEC_INBOUND_SA_MISS(l)[20152250]:Received an inbound sa miss message. (Source address: 172.27.195.20, Destination address:

xx.xx.28.78, SPI: 592408, Protocal: esp) Oct 23 2020 01:04:07+00:00 DISJAYA-VPN-ROUTER %IPSEC/5/IPSEC_INBOUND_SA_MISS(l)[20152251]:Received an inbound sa miss message. (Source address: 10.81.36.18, Destination address:

xx.xx.10.2, SPI: 14165513, Protocal: esp) Oct 23 2020 01:04:07+00:00 DISJAYA-VPN-ROUTER %IPSEC/5/IPSEC_INBOUND_SA_MISS(l)[20152252]:Received an inbound sa miss message. (Source address: 10.81.36.86, Destination address:

xx.xx.10.2, SPI: 6883249, Protocal: esp) Oct 23 2020 01:04:07+00:00 DISJAYA-VPN-ROUTER %IPSEC/5/IPSEC_INBOUND_SA_MISS(l)[20152253]:Received an inbound sa miss message. (Source address: 10.81.35.136, Destination address: