This actually isn't related to a networking issue; the exception is misleading because it uses the loopback facility in your computer to handle this library. However, this should be impossible -- this library is explicitly disabled for Linux.
Are you sure you downloaded the Linux version? If so I will need to take a second look at exactly how it's handling this frame.
EDIT: Though your comment with regards to iptables is strange. I will have to take a look at that as well. Is this your entire log file?
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たしかにひとつのじだいがおわるのお
ぼくはこのめでみたよ
だけどつぎがじぶんおばんだってことわ
しりたくなかったんだ
It's my turn next.
Shakespeare liked regexes too!
/(bb|[^b]{2})/
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