This indicates a potential Denial-of-Service (DoS) attack, known as bonk, that abuses IP fragmentation and reassembly features.
Bonk is a variant of TearDrop DoS attack. According to IPv4 standard in RFC 791, when a packet size exceeds the maximum transmission unit (MTU) of a particular network segment, it will be fragmented into two or more smaller packets, which will be reassembled by the receiver. All fragments will set appropriate offset values in their IP headers to allow for proper reassembly. Teardrop is an attack tool which generates and sends malformed IP fragment packets to crash a vulnerable machine.
Any unprotected Windows NT SP3 or earlier version, Linux kernel 2.0.29-1 or earlier version is vulnerable.
Attackers can cause DoS on the victim system.
Apply appropriate patches and/or upgrade the system to the latest non-vulnerable version.