Date: Fri, 30 Nov 2012 20:15:27 +0000 (UTC) From: jb <jb.1234abcd@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: dhclient and random disconnects Message-ID: <loom.20121130T201328-618@post.gmane.org> References: <50B8D04D.2020703@gmail.com>
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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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