Violation Type:Contractual Prohibition of Servers
An ISP attempts to contractually prohibit a user from running "servers". "Server" is usually not very well defined.
This prohibition tends to occur either when an ISP wishes to segment the market into residential and business classes, or when its charging model does not accurately correspond to their own costs and they perceive the running of "servers" to be likely to break this model.
Regardless of the nature of the prohibition, nature-of-use considerations are beyond the ISP's natural remit as a packet carrier and thus constitute a network neutrality violation.