o   Intel PRO/1000 CT Network Connection (82547)
     o   Intel PRO/1000 F Server Adapter (82543)
     o   Intel PRO/1000 Gigabit Server Adapter (82542)
     o   Intel PRO/1000 GT Desktop Adapter (82541PI)
     o   Intel PRO/1000 MF Dual Port Server Adapter (82546)
     o   Intel PRO/1000 MF Server Adapter (82545)
     o   Intel PRO/1000 MF Server Adapter (LX) (82545)
     o   Intel PRO/1000 MT Desktop Adapter (82540)
     o   Intel PRO/1000 MT Desktop Adapter (82541)
     o   Intel PRO/1000 MT Dual Port Server Adapter (82546)
     o   Intel PRO/1000 MT Quad Port Server Adapter (82546EB)
     o   Intel PRO/1000 MT Server Adapter (82545)
     o   Intel PRO/1000 T Desktop Adapter (82544)
     o   Intel PRO/1000 T Server Adapter (82543)
     o   Intel PRO/1000 XF Server Adapter (82544)
     o   Intel PRO/1000 XT Server Adapter (82544)
DIAGNOSTICS
     em%d: Unable to allocate bus resource: memory  A fatal initialization
     error has occurred.
     em%d: Unable to allocate bus resource: interrupt  A fatal initialization
     error has occurred.
     em%d: watchdog timeout -- resetting  The device has stopped responding to
     the network, or there is a problem with the network connection (cable).
SUPPORT
     For additional information regarding building and installation, see the
     README included with the driver.  For general information and support, go
     to the Intel support website at: http://support.intel.com.
     If an issue is identified with the released source code on the supported
     kernel with a supported adapter, email the specific information related
     to the issue to <freebsdnic@mailbox.intel.com>.
SEE ALSO
     arp(4), netintro(4), ng_ether(4), polling(4), vlan(4), ifconfig(8)
HISTORY
     The em device driver first appeared in FreeBSD 4.4.
AUTHORS
     The em driver was written by Intel Corporation
     <freebsdnic@mailbox.intel.com>.
BUGS
     Hardware-assisted VLAN processing is disabled by default.  You can enable
     it on an em interface using ifconfig(8).
FreeBSD 6.0                      July 16, 2005                     FreeBSD 6.0
[root@fbsd3:screen]# man em
EM(4)                  FreeBSD Kernel Interfaces Manual                  EM(4)
NAME
     em -- Intel(R) PRO/1000 Gigabit Ethernet adapter driver
SYNOPSIS
     To compile support for the
     em driver into your kernel, place the following line in your kernel con-
        figuration file:
           device em
        Alternatively, to load the
     em driver at boot time, place the following line in loader.conf(5):
              if_em_load="YES"
DESCRIPTION
     The em driver provides support for PCI Gigabit Ethernet adapters based on
     the Intel 82540, 82541ER, 82541PI, 82542, 82543, 82544, 82545, 82546,
     82546EB, 82546GB, 82547 and 82573 Ethernet controller chips.  The driver
     supports Transmit/Receive checksum offload and Jumbo Frames only on
     82540, 82543, 82544 and 82546-based adapters.  For further hardware
     information, see the README included with the driver.
     For questions related to hardware requirements, refer to the documenta-
     tion supplied with your Intel PRO/1000 adapter.  All hardware require-
     ments listed apply to use with FreeBSD.
     Support for Jumbo Frames is provided via the interface MTU setting.
     Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility con-
     figures the adapter to receive and transmit Jumbo Frames.  The maximum
     MTU size for Jumbo Frames is 16114.
     This driver version supports VLANs.  For information on enabling VLANs,
     see the README.  The em driver supports the following media types:
     autoselect   Enables auto-negotiation for speed and duplex.
     10baseT/UTP  Sets 10Mbps operation.  Use the mediaopt option to select
                  full-duplex mode.
     100baseTX    Sets 100Mbps operation.  Use the mediaopt option to select
                  full-duplex mode.
     1000baseSX   Sets 1000Mbps operation.  Only full-duplex mode is supported
                  at this speed.
     1000baseTX   Sets 1000Mbps operation.  Only full-duplex mode is supported
                  at this speed.
     The em driver supports the following media options:
     full-duplex  Forces full-duplex operation
     half-duplex  Forces half-duplex operation.
     Only use mediaopt to set the driver to full-duplex.  If mediaopt is not
     specified, the driver defaults to half-duplex.
[root@fbsd3:screen]# man xl
XL(4)                  FreeBSD Kernel Interfaces Manual                  XL(4)
NAME
     xl -- 3Com Etherlink XL and Fast Etherlink XL Ethernet device driver
SYNOPSIS
     To compile support for the
     xl driver into your kernel, place the following lines in your kernel con-
        figuration file:
           device miibus
           device xl
        Alternatively, to load the
     xl driver at boot time, place the following line in loader.conf(5):
              if_xl_load="YES"
DESCRIPTION
     The xl driver provides support for PCI Ethernet adapters and embedded
     controllers based on the 3Com "boomerang," "cyclone," "hurricane" and
     "tornado" bus-master Etherlink XL chips.
     The Etherlink XL chips support built-in 10baseT, 10base2 and 10base5
     transceivers as well as an MII bus for externally attached PHY trans-
     ceivers.  The 3c905 series typically uses a National Semiconductor NS
     83840A 10/100 PHY for 10/100 Mbps support in full or half-duplex.  The
     3c905B adapters have built-in autonegotiation logic mapped onto the MII
     for compatibility with previous drivers.  Fast Etherlink XL adapters such
     as the 3c905-TX and 3c905B-TX are capable of 10 or 100Mbps data rates in
[root@fbsd3:screen]# whatis fxp
fxp(4)                   - Intel EtherExpress PRO/100 Ethernet device driver
[root@fbsd3:screen]# ifconfig -l
em0 xl0 plip0 lo0
[root@fbsd3:screen]# exit
                         xl0: Ethernet address: 00:04:75:75:46:b1
plip0: <PLIP network interface> on ppbus0