Just a very small part of my 700mb error output

(this was generated in less than a day.. 700mb xD)
Code:
NET_GetLong: Split packet from 193.33.177.21:27111 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 92.240.237.191:27033 with invalid split size (number 116/ count 18) where size 26977 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 200.69.192.156:27024 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 200.69.192.156:27024 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 200.69.192.156:27024 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 200.69.192.156:27024 with invalid split size (number 46/ count 18) where size 13878 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 200.58.100.16:27022 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 89.28.113.7:27015 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 89.28.113.7:27015 with invalid split size (number 101/ count 18) where size 25454 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 31.210.118.24:27015 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 212.24.62.37:27065 with invalid split size (number 108/ count 18) where size 29285 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 91.146.31.161:27016 with invalid split size (number 99/ count 19) where size 101 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 91.121.69.29:27777 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 83.99.211.134:27016 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 184.22.2.154:24024 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 184.22.2.154:22233 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 184.22.2.154:22233 with invalid split size (number 0/ count 18) where size 30323 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 193.192.59.74:27025 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 200.58.97.39:27015 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 200.58.97.39:27015 with invalid split size (number 101/ count 18) where size 28001 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 200.58.97.39:27015 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 193.104.68.28:22222 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 187.44.140.140:27016 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 187.44.140.140:27016 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 77.71.15.189:27013 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 93.187.143.220:27015 with invalid split size (number 110/ count 18) where size 24948 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 93.187.143.220:27015 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 195.112.231.228:27022 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 188.165.85.241:27014 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 212.68.34.54:27015 with invalid split size (number 0/ count 18) where size 48 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 59.35.193.58:27015 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 193.192.59.30:27016 with invalid split size (number 48/ count 18) where size 29440 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 188.165.85.241:27014 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 188.165.85.241:27014 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 200.58.99.20:27024 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 103.2.238.23:27016 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
NET_GetLong: Split packet from 103.2.238.23:27016 with invalid split size (number -1/ count 2) where size -1 is out of valid range [564 - 1248 ]
Anyone might have a small idea what's causing this?