驅動包中提供了如下安裝方法：
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= Realtek 8169S/8169SB/8169SC/8168B/8168C/8168CP/8168D/8168E/ =
= 8101E/8102E/8103E/8401E/8105E Driver =
= for FreeBSD v4.x/5.x/6.x/7.x/8.x/9.x =
=================================================================================
This driver is modified by Realtek Semiconductor corp. and it has been tested OK
on FreeBSD v5.4, FreeBSD v6.4, FreeBSD v7.3, FreeBSD v8.0, and FreeBSD v9.0. To
update the driver, you may use method 1. If method 1 failed, you must use method 2
which is more complex.
Method 1:
1.Copy if_re.ko in "modules" directory to "/modules" directory and overwrite
the existing file.
2.Modify the file "/boot/defaults/loader.conf" and set "if_re_load" in "Network
drivers" section to "Yes"
3.Reboot.
Method 2:
Because the FreeBSD kernel has default drivers to support RTL8139C and RTL8169S. To use the RTL8139C+, RTL8169SB, RTL8169SC, RTL8168B, and RTL8101E, you need to update your NIC driver by recompiling your FreeBSD kernel.
The main steps you have to do:(FreeBSDSrcDir means the directory of FreeBSD source code
and it may be "/usr/src/sys")
1. keep the orginal driver source code:
# cd /usr/src/sys/dev/re
# cp if_re.c if_re.c.org
# cd /usr/src/sys/modules
# cp Makefile Makefile.org
# cd /usr/src/sys/modules/re
# cp Makefile Makefile.org
# cd /usr/src/sys/i386/conf/
# cp GENERIC GENERIC.org
2. recompile your kernel (you must install your FreeBSD source code first !!)
# vim /usr/src/sys/i386/conf/GENERIC and delete re (需要安裝VIM，刪除或注釋文件里的device re行)
# vim /usr/src/sys/modules/Makefile and delete re （刪除re \行，必須整行刪除，不能只刪除該行的內容，留一空行，否則后面編譯時會報錯）
# cd /usr/src/sys/i386/conf
# /usr/sbin/config GENERIC
(for FreeBSD 5.x/6.x/7.x/8.x/9.x)
# cd ../compile/GENERIC
(for FreeBSD 4.x)
# cd http://www.cnblogs.com/compile/GENERIC
# make cleandepend
# make depend
# make (編譯時間比較長，大約20Min+)
# make install
# reboot
3. update the driver source code:
Copy the dirver source code( if_re.c and if_rereg.h) into /usr/src/sys/dev/re
Copy the Makefile into /usr/src/sys/modules/re
4. build the driver:
# cd /usr/src/sys/modules/re
# make clean
# make
5. install the driver
# cd /usr/src/sys/modules/re
# kldload ./if_re.ko (載入新的網卡驅動)
用kldload載入驅動文件，只能一次生效，下次重啟系統時，仍然需要手動加載；
可以采用以下方式，讓系統啟動時自動載入該網卡驅動：
#cp /usr/src/sys/modules/re/if_re.ko /boot/modules/if_re.ko
#ee /boot/loader.conf 輸入if_re_load="YES"
這樣下次重啟系統時，就會自動載入網卡驅動。
6. configurate the static IP address
# ifconfig re0 xxx.xxx.xxx.xxx
7. configurate the IP address by DHCP
# /sbin/dhclient re0
The user can use the following command to change link speed and duplexmode.
1. For auto negotiation,
#ifconfig re<device_num> media autoselect
2. For 1000Mbps full-duplex,
#ifconfig re<device_num> media 1000baseTX mediaopt full-duplex
3. For 100Mbps full-duplex,
#ifconfig re<device_num> media 100baseTX mediaopt full-duplex
4. For 100Mbps half-duplex,
#ifconfig re<device_num> media 100baseTX -mediaopt full-duplex
5. For 10Mbps full-duplex,
#ifconfig re<device_num> media 10baseT/UTP mediaopt full-duplex
6. For 10Mbps half-duplex,
#ifconfig re<device_num> media 10baseT/UTP -mediaopt full-duplex