[ 479.696417] sctp: Hash tables configured (bind 256/256) [ 479.924092] ip (30734) used greatest stack depth: 11976 bytes left [ 499.922929] net_ratelimit: 2 callbacks suppressed [ 499.922932] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 499.923529] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies.