Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
dhclient problem with multiple interfaces
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Networking & Security
View previous topic :: View next topic  
Author Message
Kalin
Tux's lil' helper
Tux's lil' helper


Joined: 22 Dec 2002
Posts: 109
Location: Japan

PostPosted: Tue Dec 04, 2012 11:19 am    Post subject: dhclient problem with multiple interfaces Reply with quote

Hello,

I recently started using two interfaces connected at the same time and am having problems with running dhclient on both at the same time. It seems that two separate dhclient processes are started, but they both try to DHCPREQUEST on both interfaces.

Starting net.eth0 here is the relevant syslog:
Code:

2012-12-04T19:52:22+09:00  (daemon.info) [dhclient] DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
2012-12-04T19:52:23+09:00  (daemon.info) [dhclient] DHCPREQUEST on eth0 to 255.255.255.255 port 67
2012-12-04T19:52:23+09:00  (daemon.info) [dhclient] DHCPOFFER from 10.81.1.1
2012-12-04T19:52:23+09:00  (daemon.info) [dhclient] DHCPACK from 10.81.1.1
2012-12-04T19:52:23+09:00  (daemon.info) [dhclient] bound to 10.81.1.194 -- renewal in 36475 seconds.

then start net.wlan0
Code:

2012-12-04T19:53:06+09:00  (user.notice) [wpa_cli] interface wlan0 CONNECTED
2012-12-04T19:53:08+09:00  (daemon.info) [dhclient] DHCPREQUEST on eth0 to 255.255.255.255 port 67
2012-12-04T19:53:08+09:00  (daemon.info) [dhclient] DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
2012-12-04T19:53:08+09:00  (daemon.info) [dhclient] DHCPREQUEST on wlan0 to 255.255.255.255 port 67
2012-12-04T19:53:08+09:00  (daemon.info) [dhclient] DHCPOFFER from 192.168.100.254
2012-12-04T19:53:08+09:00  (daemon.info) [dhclient] DHCPACK from 192.168.100.254
2012-12-04T19:53:08+09:00  (daemon.info) [dhclient] bound to 192.168.100.101 -- renewal in 43021 seconds.
2012-12-04T19:53:08+09:00  (daemon.info) [dhclient] DHCPACK from 10.81.1.1
2012-12-04T19:53:08+09:00  (daemon.info) [dhclient] bound to 10.81.1.194 -- renewal in 35384 seconds.

At this moment there are two dhclient processes which seems OK:
Code:

# ps -Af|grep dhclient |grep -v grep
root     24575     1  0 19:52 ?        00:00:00 /sbin/dhclient -e PEER_NTP=no -e IF_METRIC=2 -q -1 -pf /var/run/dhclient-eth0.pid eth0
root     24949     1  0 19:53 ?        00:00:00 /sbin/dhclient -e PEER_NTP=no -e IF_METRIC=2003 -q -1 -pf /var/run/dhclient-wlan0.pid wlan0

But if I stop net.wlan0:
Code:

2012-12-04T20:05:06+09:00  (daemon.info) [dhclient] DHCPRELEASE on eth0 to 10.81.1.1 port 67
2012-12-04T20:05:06+09:00  (daemon.info) [dhclient] DHCPRELEASE on wlan0 to 192.168.100.254 port 67

eth0 is also DHCPRELEASEd :(

Relevant config:
Code:

# uname -a
Linux ss3 3.6.3 #1 SMP Tue Oct 23 00:46:51 JST 2012 x86_64 Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz GenuineIntel GNU/Linux

# cat /etc/conf.d/net
modules="wpa_supplicant iproute2 dhclient"

config_eth0="dhcp"
dhcp_eth0="release nontp nonis"

config_wlan0="dhcp"
dhcp_wlan0="release nontp nonis"

# eix_related
[I] net-misc/dhcp
     Installed versions:  4.2.4_p2(2012-12-04 19:31)(client server ssl -ipv6 -ldap -selinux -vim-syntax KERNEL="linux")
[I] net-wireless/wpa_supplicant
     Installed versions:  1.0-r2(2012-11-27 05:01)(dbus gnutls qt4 readline ssl wimax -ap -eap-sim -fasteap -madwifi -p2p -ps3 -selinux -wps KERNEL="linux -FreeBSD")
[I] net-wireless/wireless-tools
     Installed versions:  29(2012-11-17 01:39)(nls -multicall)
[I] sys-apps/baselayout
     Installed versions:  2.1-r1(2012-06-02 15:02)(-build KERNEL="linux")
[I] sys-apps/sysvinit
     Installed versions:  2.88-r4(2012-11-09 13:26)(-ibm -selinux -static KERNEL="-FreeBSD")


Any ideas? How to tell dhclient to release only IPs that are bound to the interface it binds to?
Back to top
View user's profile Send private message
Kalin
Tux's lil' helper
Tux's lil' helper


Joined: 22 Dec 2002
Posts: 109
Location: Japan

PostPosted: Tue Dec 04, 2012 11:29 am    Post subject: Reply with quote

I tried fiddling with /lib64/rc/net/dhclient.sh and passing a separate leasefile per interface (-lf), but when the 2nd dhclient is started it records both eth0 and wlan0 in there :(
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Networking & Security All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum