IPSEC, ERROR

RouterOS General
1

Hi, I need help, for a while now on all my Mikrotik brand devices where I have a VPN configured, I get the following message:

ipsec, error 216.218.206.90 failed to get valid proposal
ipsec, error 216.218.206.90 failed to pre-process ph1 packet
ipsec, error 216.218.206.90 phase 1 negotiation failed

How can I block this IP so that I don’t get this message anymore? Thank you

2 
/ip firewall address-list add address=216.218.206.90 list=blacklist

/ip firewall filter add action=drop chain=input comment="drop blacklisted" in-interface=***YOUR_WAN_INTERFACE*** src-address-list=blacklist

And move this rule just after “drop invalid” rule in the input chain.