I am running Rails 3.2.21 on Heroku and yesterday I started seeing a low 
occurrence exceptions with this signature:

ActionDispatch::RemoteIp::IpSpoofAttackError: IP spoofing 
attack?!HTTP_CLIENT_IP="10.166.210.93"HTTP_X_FORWARDED_FOR="10.166.210.93, 
74.121.112.50"

here is the full stacktrace:
https://gist.github.com/jasonfb/652fff633de527fe08fb


Heroku says this is a "false positive" and suggested I turn this off in m app 
config:

config.action_dispatch.ip_spoofing_check = false

However, they are unable to explain why we've been running for 2 months on 
their platform until yesterday without this popping up, and yesterday was the 
first occurrence of it. 

any ideas?

-Jason


----

Jason Fleetwood-Boldt
[email protected]
http://www.jasonfleetwoodboldt.com/writing


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