DNS Hijacker is a libnet/libpcap based DNS sniffer/spoofer. A versatile tool, it supports tcpdump-style filters that allow you to specifically target victims.
DNS answers are forged based on entries in a "fabrication table" or by simply forging one answer to all requests. A print-only mode is also supported, allowing one to simply monitor DNS traffic. DNS Hijacker is an excellent tool for blocking and removing advertisements at the network level.
