pcap_lookupnet(3) on FreeBSD
The text bf37ed4f1a27, as FreeBSD 8.4-RELEASE, FreeBSD 8.3-RELEASE, FreeBSD 8.2-RELEASE, FreeBSD 8.1-RELEASE, FreeBSD 8.0-RELEASE shipped it.
find the IPv4 network number and netmask for a device
The text bf37ed4f1a27, as FreeBSD 8.4-RELEASE, FreeBSD 8.3-RELEASE, FreeBSD 8.2-RELEASE, FreeBSD 8.1-RELEASE, FreeBSD 8.0-RELEASE shipped it.
find the IPv4 network number and netmask for a device