我无法hostapd开始即服务。当我尝试启动它时失败：
$ sudo service hostapd start
[FAIL] Starting advanced IEEE 802.11 management: hostapd failed!
据我了解，这将使用以下配置/etc/default/hostapd：
$ cat /etc/default/hostapd
# Defaults for hostapd initscript
#
# See /usr/share/doc/hostapd/README.Debian for information about alternative
# methods of managing hostapd.
#
# Uncomment and set DAEMON_CONF to the absolute path of a hostapd configuration
# file and hostapd will be started during system boot. An example configuration
# file can be found at /usr/share/doc/hostapd/examples/hostapd.conf.gz
#
#DAEMON_CONF=""
DAEMON_CONF=”/etc/hostapd/hostapd.conf”
# Additional daemon options to be appended to hostapd command:-
# -d show more debug messages (-dd for even more)
# -K include key data in debug messages
# -t include timestamps in some debug messages
#
# Note that -B (daemon mode) and -P (pidfile) options are automatically
# configured by the init.d script and must not be added to DAEMON_OPTS.
#
DAEMON_OPTS="-d"
我的守护程序配置文件如下：
$ cat /etc/hostapd/hostapd.conf
interface=wlan0
bridge=br0
driver=rtl871xdrv
country_code=USA
ctrl_interface=wlan0
ctrl_interface_group=0
ssid=KITT
hw_mode=g
channel=1
wpa=3
wpa_passphrase=georgeisyourfriend
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
beacon_int=100
auth_algs=3
macaddr_acl=0
wmm_enabled=1
eap_reauth_period=360000000
尽管服务无法启动，但我仍然可以直接自行启动它，而不会出现错误：
$ sudo hostapd -d /etc/hostapd/hostapd.conf
random: Trying to read entropy from /dev/random
Configuration file: /etc/hostapd/hostapd.conf
ctrl_interface_group=0
drv->ifindex=3
Configure bridge br0 for EAPOL traffic.
BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
Completing interface initialization
Mode: IEEE 802.11g Channel: 1 Frequency: 2412 MHz
RATE[0] rate=10 flags=0x1
RATE[1] rate=20 flags=0x1
RATE[2] rate=55 flags=0x1
RATE[3] rate=110 flags=0x1
RATE[4] rate=60 flags=0x0
RATE[5] rate=90 flags=0x0
RATE[6] rate=120 flags=0x0
RATE[7] rate=180 flags=0x0
RATE[8] rate=240 flags=0x0
RATE[9] rate=360 flags=0x0
RATE[10] rate=480 flags=0x0
RATE[11] rate=540 flags=0x0
Flushing old station entries
Deauthenticate all stations
+rtl871x_sta_deauth_ops, ff:ff:ff:ff:ff:ff is deauth, reason=2
rtl871x_set_key_ops
rtl871x_set_key_ops
rtl871x_set_key_ops
rtl871x_set_key_ops
Using interface wlan0 with hwaddr 80:1f:02:d3:cb:b8 and ssid 'KITT'
Deriving WPA PSK based on passphrase
SSID - hexdump_ascii(len=4):
4b 49 54 54 KITT
PSK (ASCII passphrase) - hexdump_ascii(len=18): [REMOVED]
PSK (from passphrase) - hexdump(len=32): [REMOVED]
rtl871x_set_wps_assoc_resp_ie
rtl871x_set_wps_beacon_ie
rtl871x_set_wps_probe_resp_ie
urandom: Got 20/20 bytes from /dev/urandom
GMK - hexdump(len=32): [REMOVED]
Key Counter - hexdump(len=32): [REMOVED]
WPA: group state machine entering state GTK_INIT (VLAN-ID 0)
GTK - hexdump(len=32): [REMOVED]
WPA: group state machine entering state SETKEYSDONE (VLAN-ID 0)
rtl871x_set_key_ops
rtl871x_set_beacon_ops
rtl871x_set_hidden_ssid ignore_broadcast_ssid:0, KITT,4
rtl871x_set_acl
wlan0: Setup of interface done.
hostapd通过init.d（service hostapd start）来运行时遇到问题，则似乎什么也没发生...请参阅此论坛帖子。