Rip out the option to collect local IP addresses
The NetworkInfoService (./netwerk/base/NetworkInfoServiceCocoa.cpp and ./netwerk/base/NetworkInfoServiceLinux.cpp) both collect a list of local IP addresses for use in nsNetworkInfoService::ListNetworkAddresses(). This is used by mDNS and the Presentation API. We should rip out the relevant part as a defense in depth
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