Libpcap is a portable packet capture library which is used in many packet sniffers, including tcpdump.
Changes: Under the source code, they sorted the PUBHDR variable in Makefile.in in "ls" order, fixed a typo in comment in pflog.h, removed two no-longer-present files from .gitignore, and updated code and comments for handling failure to set promiscuous mode based on new information. Various updates to the building and testing process.