On 30/11/2012 21:15, jb wrote:
David Demelier <demelier.david <at> gmail.com> writes:
Hi,
In my university, I have a WPA-EAP wifi access point, it requires
authentification to access, with dhclient, I'm disconnected randomly and
I must run wpa_cli reconfigure / dhclient again to get it working.
This is really too general - it could be a problem with AP or your box.
When you say randomly, do you mean like every hour or so, or every 10 min or
so ? What is the pattern ?
Does it happen that your box is left alone for extended period of time, that
is without user and active application activity, while being connected ? If
so, do you find your box disconnected after such time (what is the time
interval) ?
Do the disconnects happen at IP lease renewal times (see output below) ?
What could the problem be with dhclient? I don't know very well what
these processes are doing. Does the process check for lease by a
specific interval?
Yes, it does IP lease renewal.
Post to the list the following outputs while using dhclient:
Your wireless configuration (relevant data only):
$ cat /etc/rc.conf
Review /etc/defaults/rc.conf w/r to dhclient and wpa_supplicant.
Do you have anything related to your wireless card driver in loader(8)
tunables or sysctl(8) variables ?
Your wpa_supplicant_conf_file, presumably:
$ cat /etc/wpa_supplicant.conf
$ ps auxwww | grep -i dhclient
Config file:
$ cat /etc/dhclient.conf
Your lease renewal log file:
# cat /var/db/dhclient.leases.????
$ ifconfig -a
$ netstat -s
Any wireless card driver related messages (substitute wpi for yours):
$ grep -i wpi /var/log/messages
After that spend some time with:
$ apropos dhclient
dhclient(8) - Dynamic Host Configuration Protocol (DHCP) client
dhclient-script(8) - DHCP client network configuration script
dhclient.conf(5) - DHCP client configuration file
dhclient.leases(5) - DHCP client lease database
You should not hesitate to contact, if possible, your Uni sys admin and ask
about it.
By now you should be an expert - after all you use FreeBSD for a reason :-)
jb
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Hello thanks for your answer,
I have setup lagg0 for a failover with ethernet, (note the problem
appears if I use wlan0 only too)
# Fail over between wired/wireless.
cloned_interfaces="lagg0"
ifconfig_msk0="up"
ifconfig_ath0="ether 18:a9:05:87:38:0a"
ifconfig_wlan0="WPA"
ifconfig_lagg0="laggproto failover laggport msk0 laggport wlan0 DHCP"
ipv6_activate_all_interfaces="YES"
my wpa_supplicant.conf is like this :
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
eapol_version=1
ap_scan=1
fast_reauth=1
network={
ssid="osiris-sec"
proto=WPA2 WPA
scan_ssid=1
key_mgmt=WPA-EAP
pairwise=CCMP TKIP
group=CCMP TKIP
eap=TTLS
ca_cert="/etc/iut-cert.pem"
anonymous_identity="anonym...@u-strasbg.fr"
phase2="auth=PAP"
identity="demelier"
password="***"
}
The dhclient.leases.lagg0 is populated with a very long list of :
lease {
interface "lagg0";
fixed-address 172.29.23.190;
option subnet-mask 255.255.0.0;
option routers 172.29.255.254;
option domain-name-servers 130.79.200.200;
option domain-name "u-strasbg.fr";
option dhcp-lease-time 300;
option dhcp-message-type 5;
option dhcp-server-identifier 172.29.255.253;
option dhcp-renewal-time 150;
option dhcp-rebinding-time 262;
renew 4 2012/12/13 13:16:16;
rebind 4 2012/12/13 13:18:08;
expire 4 2012/12/13 13:18:46;
}
I dont have any driver settings in sysctl.
And the ifconfig :
markand@Melon ~ $ ifconfig
ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 2290
ether 18:a9:05:87:38:0a
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: IEEE 802.11 Wireless Ethernet autoselect mode 11g
status: associated
msk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=c019b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE>
ether 18:a9:05:87:38:0a
inet6 fe80::1aa9:5ff:fe87:380a%msk0 prefixlen 64 scopeid 0x2
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: Ethernet autoselect (none)
status: no carrier
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
inet 127.0.0.1 netmask 0xff000000
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 18:a9:05:87:38:0a
inet6 fe80::1aa9:5ff:fe87:380a%lagg0 prefixlen 64 scopeid 0x4
inet 172.29.23.190 netmask 0xffff0000 broadcast 172.29.255.255
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: Ethernet autoselect
status: active
laggproto failover lagghash l2,l3,l4
laggport: wlan0 flags=4<ACTIVE>
laggport: msk0 flags=1<MASTER>
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 18:a9:05:87:38:0a
inet6 fe80::1aa9:5ff:fe87:380a%wlan0 prefixlen 64 scopeid 0x5
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: IEEE 802.11 Wireless Ethernet OFDM/48Mbps mode 11g
status: associated
ssid osiris-sec channel 6 (2437 MHz 11g) bssid 00:26:99:23:6d:53
regdomain 106 indoor ecm authmode WPA2/802.11i privacy ON
deftxkey UNDEF AES-CCM 2:128-bit AES-CCM 3:128-bit txpower 20 bmiss 7
scanvalid 450 bgscan bgscanintvl 300 bgscanidle 250 roam:rssi 7
roam:rate 5 protmode CTS wme burst roaming MANUAL bintval 102
I will also send a mail to the admin to check if I have done something
wrong or if it is a renegociation problem..
Cheers,
David Demelier
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