Mgtcomd: iptables add rule match set?

Best regards. Today all my clients disconnected from 3K. I found unclear content in the log. Can someone tell me what it means, does anyone have a similar experience? Thank you.
Log:

Apr 21 10:45:59 SR-3K mgtcomd: iptables add rule match set sm_BC:E6:7C:XX:XX:XX FROM
Apr 21 10:45:59 SR-3K mgtcomd: iptables add rule match set sm_BC:E6:7C:XX:XX:XX TO
Apr 21 10:45:59 SR-3K mgtcomd: ipset sm_BC:E6:7C:XX:XX:XX add 172.16.211.242 → 35.171.250.130
Apr 21 10:45:59 SR-3K mgtcomd: ipset sm_BC:E6:7C:XX:XX:XX add 172.16.211.242 → 23.20.197.221
Apr 21 10:45:58 SR-3K mgtcomd: Apply CNS ip-addresses from BC:E6:7C:XX:XX:XX: “{‘ip_addr’:‘172.16.211.242’,‘cns’:‘23.20.197.221 35.171.250.130’}”