Date: Mon, 11 Feb 2008 13:23:57 +1100 From: Robert Jenssen <robertjenssen@ozemail.com.au> To: brooks@freebsd.org Cc: net@freebsd.org Subject: Re: dhclient conflict between /sbin/devd and /etc/rc.d/netif ? Message-ID: <200802111323.57387.robertjenssen@ozemail.com.au> In-Reply-To: <20080211010626.GA69153@lor.one-eyed-alien.net> References: <200802111137.21550.robertjenssen@ozemail.com.au> <20080211010626.GA69153@lor.one-eyed-alien.net>
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Hi,
Thanks for the prompt reply. By "owned", I meant that "ps -ajx"
shows /sbin/devd as the process group leader. For example, at the moment on
my system:
[root etc]ps -axj | grep devd
root 5727 1 5727 5727 0 Is ?? 0:00.00 /sbin/devd
[root etc]ps -axj | grep dhclient
root 6373 1 5727 5727 0 I ?? 0:00.00 dhclient: ral0
_dhcp 6395 1 6395 6395 0 Ss ?? 0:00.09 dhclient: ral0
[root etc]
I agree, /sbin/devd calls /etc/rc.d/dhclient which checks for the existence of
a running dhclient. I find the rc scripts hard to follow but so far as I can
see /etc/rc.d/netif simply calls "ifconfig dhcp" and doesn't check for a
running dhclient. Here are the relevant lines in my rc.conf:
rc_debug="YES"
ifconfig_ral0="inet dhcp channel 10 wpa up"
devd_enable="YES"
Here is the output of "/etc/rc.d/netif restart":
[root etc]rc.d/netif restart
rc.d/netif: DEBUG: run_rc_command: doit: network_stop
Stopping network:Stopping wpa_supplicant.
/etc/rc.d/wpa_supplicant: DEBUG: run_rc_command: doit: kill -TERM 6229
/etc/rc.d/dhclient: DEBUG: run_rc_command: doit: dhclient_stop
lo0 fwip0 fwe0 rl0 ral0 plip0rc.d/netif: DEBUG: The following interfaces were
not configured:
.
rc.d/netif: DEBUG: run_rc_command: doit: network_start
rc.d/netif: DEBUG: Cloned:
Starting wpa_supplicant.
/etc/rc.d/wpa_supplicant: DEBUG: run_rc_command:
doit: /usr/sbin/wpa_supplicant -q -B -i ral0 -c /etc/wpa_supplicant.conf -D
bsd -P /var/run/wpa_supplicant/ral0.pid
rc.d/netif: DEBUG: checkyesno: synchronous_dhclient is set to YES.
/etc/rc.d/dhclient: DEBUG: run_rc_command: doit: dhclient_start
/etc/rc.d/dhclient: DEBUG: checkyesno: background_dhclient is set to NO.
ral0: no link ............ got link
DHCPREQUEST on ral0 to 255.255.255.255 port 67
DHCPDISCOVER on ral0 to 255.255.255.255 port 67 interval 8
DHCPOFFER from 192.168.0.1
DHCPREQUEST on ral0 to 255.255.255.255 port 67
DHCPACK from 192.168.0.1
bound to 192.168.0.4 -- renewal in 43200 seconds.
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x6
inet6 ::1 prefixlen 128
inet 127.0.0.1 netmask 0xff000000
ral0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 00:xx:....
inet 192.168.0.4 netmask 0xffffff00 broadcast 192.168.0.255
media: IEEE 802.11 Wireless Ethernet autoselect (OFDM/54Mbps)
status: associated
ssid xxxxxxxxxxxx channel 10 (2457 Mhz 11g) bssid 00:xx:.....
authmode WPA privacy ON deftxkey UNDEF TKIP 3:128-bit txpower 50
bmiss 7 scanvalid 60 bgscan bgscanintvl 300 bgscanidle 250
roam:rssi11g 7 roam:rate11g 5 protmode CTS roaming MANUAL
rc.d/netif: DEBUG: The following interfaces were not configured: fwip0 fwe0
rl0 plip0
/etc/rc.d/ipfilter: DEBUG: checkyesno: ipfilter_enable is set to NO.
Now I have four dhclient processes:
[root etc]ps -axj | grep dhclient
root 9824 1 5727 5727 0 S ?? 0:00.00 dhclient: ral0
[pri
_dhcp 9853 1 9853 9853 0 Ss ?? 0:00.00 dhclient: ral0
(dhc
_dhcp 9880 1 9880 9880 0 Ss ?? 0:00.00 dhclient: ral0
(dhc
root 9826 1 9283 1916 0 S p0 0:00.00 dhclient: ral0
[pri
It seems that devd has started two new dhclients and netif has started its own
pair as well. 1916 is the process id of the bash shell I su'ed from to
start /etc/rc.d/netif.
Best regards,
Rob Jenssen
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