DDOS from tibia.org.pl?

[TomCrusher]

[11:22:35.089] [Warning - Protocol::RSA_decrypt] Not valid packet size (IP: 46.105.110.119)
[11:28:37.769] [Warning - Protocol::RSA_decrypt] Not valid packet size (IP: 46.105.110.119)
[11:37:34.964] [Warning - Protocol::RSA_decrypt] Not valid packet size (IP: 46.105.110.119)
[11:43:34.915] [Warning - Protocol::RSA_decrypt] Not valid packet size (IP: 46.105.110.119)

DOMAIN NAME: ots.pl
registrant type: individual
nameservers: ns2.ots.pl. [46.105.110.119]
ns1.ots.pl. [46.105.110.119]
created: 2005.06.11 08:54:37
last modified: 2011.09.26 20:40:58
renewal date: 2012.06.11 08:54:37

option created: 2011.06.03 09:55:56
option expiration date: 2014.06.03 09:55:56

REGISTRAR:
NetArt Spolka Akcyjna S.K.A.
ul. Cystersow 20A
31-553 Krakow

Why I get so many invalid packets from this address? Someone have like as me?