ICMP (type 11, code 0)

I have this in log, and 2000p/s on interfaces, between 2 router , all public IP.

I find this on internet “Type:11 Code:0 TTL EXCEEDED IN TRANSIT”

When I have tih in log I have problem with link between this 2 router, latency 100-200ms

this happend from my IP to multiple IP on internet , in log are x.x.x.x > y.y.y.y , xxxx is my IP

are this some DDOS or somethig else ?

routerOS 2.9.44