• Updated IEEE OUI and IAB MAC/Vendor files. There are now 14707 OUI entries and 3542 IAB entries.
• Added support for trailer ARP replies, which were used in early versions of BSD Unix on VAX.
• Added support for ARP packets with both 802.1Q VLAN tag and LLC/SNAP framing.
• The full help output is only displayed if specifically requested with arp-scan --help. Usage errors now result in smaller help output.
• Added support for Apple Mac OS X with Xcode 2.5 and later. This allows arp-scan to build on Tiger, Leopard and Snow Leopard.
• Changed license from GPLv2 to GPLv3.
• Added warning about possible DoS when setting ar$spa to the destination IP address to the help output and man page.
• Added arp-fingerprint patterns for 2.11BSD, NetBSD 4.0, FreeBSD 7.0, Vista SP1, Windows 7 and Blackberry OS.
• Enabled compiler security options -fstack-protect, -D_FORTIFY_SOURCE=2 and -Wformat-security if they are supported by the compiler. Also enabled extra warnings -Wwrite-strings and -Wextra.
• Added new "make check" tests to check packet generation, and packet decoding and display.
• Modified get-oui and get-iab perl scripts so they will work on systems where the perl interpreter is not in /usr/bin, e.g. NetBSD.
• Various minor bug fixes and improvements.