06-07-2011
Disappearing when not used is an arp cache feature, in case you are changing NICs on an host. I think 5 minutes is pretty usual, esp for Windows. This makes things tricky/slow if you design a failover that puts a new MAC on an IP.
If you pull the cable on the first NIC, does it move over gracefully?
If you provide saturating load, does it ever use the other NICs?
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MY(4) BSD Kernel Interfaces Manual MY(4)
NAME
my -- Myson Technology Ethernet PCI driver
SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file:
device my
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
if_my_load="YES"
DESCRIPTION
The my driver provides support for various NICs based on the Myson chipset. The Myson chipset is a variant of the DEC Tulip NIC chipset.
The driver will work with almost any MII-compliant PHY, thus failure to positively identify the chip is not a fatal error.
HARDWARE
The my driver provides support for various NICs based on the Myson chipset. Supported models include:
o Myson MTD800 PCI Fast Ethernet chip
o Myson MTD803 PCI Fast Ethernet chip
o Myson MTD89X PCI Gigabit Ethernet chip
SEE ALSO
altq(4), de(4), netintro(4), pci(4), ifconfig(8)
HISTORY
The my driver first appeared in FreeBSD 4.6.
AUTHORS
The my driver was written by Myson Technology Inc.
This manual page was written by Hiten M. Pandya <hmp@FreeBSD.org>.
BUGS
The my driver does not support Power Management Events (PME).
BSD
March 11, 2007 BSD