Binary package “libpcap0.8” in ubuntu lucid
system interface for user-level packet capture
libpcap (Packet CAPture) provides a portable framework for low-level
network monitoring. Applications include network statistics collection,
security monitoring, network debugging, etc.
Since almost every system vendor provides a different interface for
packet capture, and since there are several tools that require this
functionality, we've created this system-independent API to ease in
porting and to alleviate the need for several system-dependent packet
capture modules in each application.