Mysterious IP accompanying error

Today I noticed that an IP I didn't recognize was showing up in the usual "can't keep up!" errors on my command module. I've pasted the relevant portion below.

Both IPs listed are from California, and I'm sure that nobody on my server is or has been logging on from there. Apparently the ISP is some company called Krypt Technoligies; I'm not sure what to make of that.

Does this seem like it's related to authenticating with Mojang, or does it seem like something was trying to gain access to my PC? Would that even be possible? I'm afraid I don't really know enough about computer security to make heads or tails of this.

08:18:29 [SEVERE] java.io.IOException: Bad packet id 71
08:18:29 [SEVERE] at net.minecraft.server.Packet.a(Packet.java:73)
08:18:29 [SEVERE] at net.minecraft.server.NetworkManager.h(NetworkManager.java:149)
08:18:29 [SEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.java:263)
08:18:29 [SEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:77)
08:18:29 [INFO] /98.126.50.178:1912 lost connection
08:33:59 [SEVERE] java.io.IOException: Bad packet id 71
08:33:59 [SEVERE] at net.minecraft.server.Packet.a(Packet.java:73)
08:33:59 [SEVERE] at net.minecraft.server.NetworkManager.h(NetworkManager.java:149)
08:33:59 [SEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.java:263)
08:33:59 [SEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:77)
08:33:59 [INFO] /98.126.108.154:1329 lost connection
08:58:18 [SEVERE] java.io.IOException: Bad packet id 71
08:58:18 [SEVERE] at net.minecraft.server.Packet.a(Packet.java:73)
08:58:18 [SEVERE] at net.minecraft.server.NetworkManager.h(NetworkManager.java:149)
08:58:18 [SEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.java:263)
08:58:18 [SEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:77)
08:58:18 [INFO] /98.126.50.178:4858 lost connection
09:00:24 [SEVERE] java.io.IOException: Bad packet id 71
09:00:24 [SEVERE] at net.minecraft.server.Packet.a(Packet.java:73)
09:00:24 [SEVERE] at net.minecraft.server.NetworkManager.h(NetworkManager.java:149)
09:00:24 [SEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.java:263)
09:00:24 [SEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:77)
09:00:24 [INFO] /98.126.50.178:2987 lost connection
09:51:59 [SEVERE] java.io.IOException: Bad packet id 71
09:51:59 [SEVERE] at net.minecraft.server.Packet.a(Packet.java:73)
09:51:59 [SEVERE] at net.minecraft.server.NetworkManager.h(NetworkManager.java:149)
09:51:59 [SEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.java:263)
09:51:59 [SEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:77)
09:51:59 [INFO] /98.126.108.154:2351 lost connection

 

Google the company and google the ip who knows

 

It could mean they have something wrong with their client. Not 100% though

 

Ive had the same problem with the same IP, my server is only used by me and 2-3 friends, noone else should even know it exists. Id really love to know what it meant.