want to see an amount of traffic passed through interface since boot. It's an ISPManager VDS with FreeBSD 8.0, and
ifconfig -L epair521b -B
does nothing.
Want to have output like Linux's ifconfig:
lo Link encap:Local Loopback
...RX bytes:6642443661 (6.1 GiB) TX bytes:6642443661 (6.1 GiB)