Smit is an ARP-level transproxy/sniffer, capable of relaying local traffic even in switched environment. The source is based on the arprelay and arpmitm tools, but offers a nice command line interface and option of saving raw packets into a file. It includes some tricky techniques for ARP-cache consistence.
See System Management Interface Tool (page ***).
System Management Interface Tool. A set of menu-driven services that facilitates the performance of such system tasks as software installation and configuration, device configuration and management, problem determination, and storage management. SMIT is provided in both a character-based curses interface and an AIXwindows-based graphical user interface.