FreeBSD Netgraph Interface Bonding
From NSMWiki
The following is used on FreeBSD to combine two physical interfaces (fxp1, fxp2) into a single virtual interface (ngeth0). This method allows one to take the feeds from a traditional two-output tap and present a single virtual interface to NSM applications.
#!/bin/sh kldload ng_ether ifconfig fxp1 promisc -arp up ifconfig fxp2 promisc -arp up ngctl mkpeer . eiface hook ether ngctl mkpeer ngeth0: one2many lower one ngctl connect fxp1: ngeth0:lower lower many0 ngctl connect fxp2: ngeth0:lower lower many1 ifconfig ngeth0 -arp up
Remember to replace fxp1 and fxp2 with the interfaces on your FreeBSD system (e.g., em0, em1, etc.).
