http://bugzilla.novell.com/show_bug.cgi?id=579438 http://bugzilla.novell.com/show_bug.cgi?id=579438#c0 Summary: [openSUSE:11.2/dhcpcd] dhcpcd on openSUSE-11.2 sometime loops endless after adding wlan usb stick (with dhcp ip lease time infinity) Classification: openSUSE Product: openSUSE.org Version: unspecified Platform: i686 OS/Version: openSUSE 11.2 Status: NEW Severity: Normal Priority: P5 - None Component: 3rd party software AssignedTo: varkoly@novell.com ReportedBy: Peter.Seiderer@gmx.de QAContact: opensuse-communityscreening@forge.provo.novell.com Found By: --- Blocker: --- Plug in wlan usb stick, connection to access point established, disconnect, connect, disconnect, connect, ....

From /var/log/messages:

Feb 11 16:24:21 linux-klms dhcpcd[14029]: wlan0: dhcpcd 3.2.3 starting Feb 11 16:24:21 linux-klms dhcpcd[14029]: wlan0: hardware address = 00:13:49:90:c9:bc Feb 11 16:24:21 linux-klms dhcpcd[14029]: wlan0: broadcasting for a lease Feb 11 16:24:41 linux-klms dhcpcd[14029]: wlan0: timed out Feb 11 16:24:41 linux-klms dhcpcd[14029]: wlan0: trying to use old lease in `/var/lib/dhcpcd/dhcpcd-wlan0.info' Feb 11 16:24:41 linux-klms dhcpcd[14029]: wlan0: adding IP address 192.168.2.100/24 Feb 11 16:24:41 linux-klms dhcpcd[14029]: wlan0: adding default route via 192.168.2.1 metric 0 Feb 11 16:24:44 linux-klms dhcpcd[14029]: wlan0: Failed to lookup hostname via DNS: Name or service not known Feb 11 16:24:44 linux-klms dhcpcd[15526]: wlan0: renewing lease of 192.168.2.100 Feb 11 16:24:44 linux-klms dhcpcd[15526]: wlan0: lost lease, attemping to rebind Feb 11 16:24:44 linux-klms dhcpcd[15526]: wlan0: lost lease Feb 11 16:24:44 linux-klms dhcpcd[15526]: wlan0: removing default route via 192.168.2.1 metric 0 Feb 11 16:24:44 linux-klms dhcpcd[15526]: wlan0: removing IP address 192.168.2.100/24 Feb 11 16:24:44 linux-klms dhcpcd[14029]: wlan0: exiting Feb 11 16:24:45 linux-klms dhcpcd[15526]: wlan0: trying to use old lease in `/var/lib/dhcpcd/dhcpcd-wlan0.info' Feb 11 16:24:45 linux-klms dhcpcd[15526]: wlan0: adding IP address 192.168.2.100/24 Feb 11 16:24:45 linux-klms dhcpcd[15526]: wlan0: adding default route via 192.168.2.1 metric 0 Feb 11 16:24:47 linux-klms dhcpcd[15526]: wlan0: Failed to lookup hostname via DNS: Name or service not known Feb 11 16:24:47 linux-klms dhcpcd[15526]: wlan0: renewing lease of 192.168.2.100 Feb 11 16:24:47 linux-klms dhcpcd[15526]: wlan0: lost lease, attemping to rebind Feb 11 16:24:47 linux-klms dhcpcd[15526]: wlan0: lost lease Feb 11 16:24:47 linux-klms dhcpcd[15526]: wlan0: removing default route via 192.168.2.1 metric 0 Feb 11 16:24:47 linux-klms dhcpcd[15526]: wlan0: removing IP address 192.168.2.100/24 Feb 11 16:24:47 linux-klms dhcpcd[15526]: wlan0: trying to use old lease in `/var/lib/dhcpcd/dhcpcd-wlan0.info' ... The problem seems to be using the old lease from stored file, try to renewing the lease and immediately the message 'lost lease'. The access point 'Vodafone DSL-EasyBox 802' (Firmware Version:20.02.221, DHCP lease time set to 'forever') sends the following DHCP ACK: Internet Protocol, Src: 192.168.2.1 (192.168.2.1), Dst: 255.255.255.255 (255.255.255.255) User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68) Bootstrap Protocol Message type: Boot Reply (2) Client IP address: 0.0.0.0 (0.0.0.0) Your (client) IP address: 192.168.2.100 (192.168.2.100) Next server IP address: 192.168.2.1 (192.168.2.1) Relay agent IP address: 0.0.0.0 (0.0.0.0) Client MAC address: ZyxelCom_90:c9:bc (00:13:49:90:c9:bc) Client hardware address padding: 00000000000000000000 Server host name not given Boot file name not given Magic cookie: (OK) Option: (t=53,l=1) DHCP Message Type = DHCP ACK Option: (t=54,l=4) DHCP Server Identifier = 192.168.2.1 Option: (t=51,l=4) IP Address Lease Time = infinity Option: (51) IP Address Lease Time Length: 4 Value: FFFFFFFF Option: (t=1,l=4) Subnet Mask = 255.255.255.0 Option: (t=3,l=4) Router = 192.168.2.1 Option: (t=6,l=4) Domain Name Server = 192.168.2.1 End Option Padding Note the value '0xffffffff' (infinity) for the option 'IP Address Lease Time'. This lease time is handled in 'handle_dhcp()' (dhcpcd-3.2.3/client.c:line904-905): 904 } else if (dhcp->leasetime == (unsigned) -1) { 905 dhcp->renewaltime = dhcp->rebindtime = dhcp->leasetime; and the same value is set for leasetime, renewaltime and rebindtime and saved to info file '/var/lib/dhcpcd/dhcpcd-wlan0.info' (0xffffffff is '4294967295'): DHCPSIADDR='192.168.2.1' IPADDR='192.168.2.100' NETMASK='255.255.255.0' NETWORK='192.168.2.0' BROADCAST='192.168.2.255' ROUTES='' GATEWAYS='192.168.2.1' DNSSERVERS='192.168.2.1' DHCPSID='192.168.2.1' LEASEDFROM='1265907910' LEASETIME='4294967295' RENEWALTIME='4294967295' REBINDTIME='4294967295' INTERFACE='wlan0' CLASSID='dhcpcd 3.2.3' CLIENTID='01:00:13:49:90:c9:bc' DHCPCHADDR='00:13:49:90:c9:bc' After restart the values are taken from the previously stored info file and a renewing via DHCP is started which immmediately fails because of a calculated timeout value of 0 (because of the same value for LEASETIME, RENEWALTIME and REBINDTIME, in case of a finite leasetime value renewaltime is calculated as '0.5 * leasetime' and rebindtime as '0.875 * leasetime'). The following patch (dhcpcd-3.2.3-set_default_timeout.diff fixed the problem for me: --- dhcpcd-3.2.3_patched_suse/client.c 2010-02-11 14:48:54.000000000 +0100 +++ dhcpcd-3.2.3/client.c 2010-02-11 16:47:22.000000000 +0100 @@ -746,6 +746,10 @@ do_socket (state, SOCKET_OPEN); _send_message (state, DHCP_REQUEST, options); state->timeout = dhcp->rebindtime - dhcp->renewaltime; + if (state->timeout == 0) { + logger (LOG_INFO, "renewing lease of %s set default timeout", inet_ntoa(dhcp->address)); + state->timeout = DEFAULT_TIMEOUT; + } state->state = STATE_REBINDING; break; case STATE_REBINDING: @@ -757,6 +761,10 @@ dhcp->serveraddress.s_addr = 0; _send_message (state, DHCP_REQUEST, options); state->timeout = dhcp->leasetime - dhcp->rebindtime; + if (state->timeout == 0) { + logger (LOG_INFO, "rebind lease set default timeout", inet_ntoa(dhcp->address)); + state->timeout = DEFAULT_TIMEOUT; + } state->state = STATE_REQUESTING; break; case STATE_REQUESTING: In case of renewing or rebind the calculated timeout (from the values rebindtime minus renewaltime or leasetime minus rebindtime) value is tested against 0 and set to DEFAULT_TIMEOUT (20 seconds) and logging message printed.

From /var/log/messages with patch applied to dhcpcd:

Feb 11 16:35:30 linux-klms dhcpcd[22479]: wlan0: dhcpcd 3.2.3 starting Feb 11 16:35:30 linux-klms dhcpcd[22479]: wlan0: hardware address = 00:13:49:90:c9:bc Feb 11 16:35:30 linux-klms dhcpcd[22479]: wlan0: broadcasting for a lease Feb 11 16:35:50 linux-klms dhcpcd[22479]: wlan0: timed out Feb 11 16:35:50 linux-klms dhcpcd[22479]: wlan0: trying to use old lease in `/var/lib/dhcpcd/dhcpcd-wlan0.info' Feb 11 16:35:50 linux-klms dhcpcd[22479]: wlan0: adding IP address 192.168.2.100/24 Feb 11 16:35:50 linux-klms dhcpcd[22479]: wlan0: adding default route via 192.168.2.1 metric 0 Feb 11 16:35:57 linux-klms dhcpcd[22479]: wlan0: Failed to lookup hostname via DNS: Name or service not known Feb 11 16:35:57 linux-klms dhcpcd[23814]: wlan0: renewing lease of 192.168.2.100 Feb 11 16:35:57 linux-klms dhcpcd[23814]: wlan0: renewing lease of 192.168.2.100 set default timeout Feb 11 16:35:57 linux-klms dhcpcd[22479]: wlan0: exiting Feb 11 16:35:57 linux-klms dhcpcd[23814]: wlan0: leased 192.168.2.100 for infinity Feb 11 16:35:57 linux-klms dhcpcd[23814]: wlan0: adding IP address 192.168.2.100/24 Feb 11 16:35:57 linux-klms dhcpcd[23814]: wlan0: adding default route via 192.168.2.1 metric 0 Note the line with 'renewing lease of 192.168.2.100 set default timeout'. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.