networkmanager spawned dhcpcd and kill it consistantly?

[cheng renquan <crquan gmail com>]

recently after my Arch Linux desktop update, I found with home
internet, the networkmanager
seems constantly kills dhcpcd, then spawn it again, then kill it, with this loop
for 10 minutes or longer time it may not kill dhcpcd and get wifi
stably working;

$ ps fuww -s 3160
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root      3160  1.2  0.1 238464  6924 ?        Ssl  23:30   0:00
/usr/sbin/NetworkManager
root      3165  0.0  0.0   8512   856 ?        S    23:30   0:00  \_
/sbin/dhcpcd -B -K -L -G -c
/usr/lib/networkmanager/nm-dhcp-client.action wlan0

>From syslog we can see dhcpcd[3165]: received SIGTERM and removed
ipaddr info of wlan0,
I don't know what program is sending the SIGTERM,

but finally if kill NetworkManager[3160] after spawned a new dhcpcd
assigned ipaddr for wlan0 and before it received SIGTERM;
then dhcpcd itself could work for long time, and the wifi network is then stable


Jun  8 23:30:21 archtop NetworkManager[3160]:    keyfile: parsing ATT448 ...
Jun  8 23:30:21 archtop NetworkManager[3160]:    keyfile:     read
connection 'ATT448'
Jun  8 23:30:21 archtop kernel: [  745.685042] cfg80211: Calling CRDA
to update world regulatory domain
Jun  8 23:30:24 archtop dhcpcd[3165]: version 5.5.6 starting
Jun  8 23:30:24 archtop dhcpcd[3165]: all: not configured to accept IPv6 RAs
Jun  8 23:30:24 archtop dhcpcd[3165]: wlan0: rebinding lease of 192.168.1.121
Jun  8 23:30:24 archtop dhcpcd[3165]: wlan0: acknowledged
192.168.1.121 from 192.168.1.254
Jun  8 23:30:25 archtop dhcpcd[3165]: wlan0: checking for 192.168.1.121
Jun  8 23:30:30 archtop dhcpcd[3165]: wlan0: leased 192.168.1.121 for
86400 seconds
Jun  8 23:30:31 archtop dbus[2095]: [system] Activating service
name='org.freedesktop.nm_dispatcher' (using servicehelper)
Jun  8 23:30:31 archtop dbus[2095]: [system] Successfully activated
service 'org.freedesktop.nm_dispatcher'
Jun  8 23:30:45 archtop dbus[2095]: [system] Activating service
name='org.freedesktop.nm_dispatcher' (using servicehelper)
Jun  8 23:30:45 archtop dhcpcd[3165]: received SIGTERM, stopping
Jun  8 23:30:45 archtop dhcpcd[3165]: wlan0: removing interface
Jun  8 23:30:45 archtop dbus[2095]: [system] Successfully activated
service 'org.freedesktop.nm_dispatcher'
Jun  8 23:30:45 archtop kernel: [  769.311366] cfg80211: Calling CRDA
to update world regulatory domain
Jun  8 23:30:51 archtop dhcpcd[3184]: version 5.5.6 starting
Jun  8 23:30:51 archtop dhcpcd[3184]: all: not configured to accept IPv6 RAs
Jun  8 23:30:51 archtop dhcpcd[3184]: wlan0: rebinding lease of 192.168.1.121
Jun  8 23:30:51 archtop dhcpcd[3184]: wlan0: acknowledged
192.168.1.121 from 192.168.1.254
Jun  8 23:30:51 archtop dhcpcd[3184]: wlan0: checking for 192.168.1.121
Jun  8 23:30:56 archtop dhcpcd[3184]: wlan0: leased 192.168.1.121 for
86400 seconds


$ pacman -Qi networkmanager
Name           : networkmanager
Version        : 0.9.4.0-4
URL            : http://www.gnome.org/projects/NetworkManager/