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Lease Lost

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Lease Lost

Posted: Fri Sep 05, 2014 6:25 pm
by Jaycee
I keep losing the lease on my connection. It seems to happen every one or two hours or so but seems to be getting more frequent. I have the lease time set at 24 hours. I also disabled IPv6 for a while as I suspected this was the cause but it isn't. The router is connected to a satellite internet modem via the EWAN port and I'm not 100% sure that it's the router and not the modem that's at fault. The router is running firmware 2.32d and this problem started about a month ago.

Here's the text from the log when the problem occurs:-

Sep 5 17:13:11 daemon crit kernel: eth2 (switch port: 2) Link UP 100 mbps full duplex
Sep 5 17:13:11 daemon info kernel: br0: topology change detected, propagating
Sep 5 17:13:11 daemon info kernel: br0: bridge group port 2(eth2) entering forwarding state
Sep 5 17:13:43 daemon err syslog: dhcpd:sending OFFER of 192.168.1.9
Sep 5 17:13:43 daemon err syslog: dhcpd:sending ACK to 192.168.1.9
Sep 5 18:11:46 daemon err syslog: dhcpc:Lease lost, entering init state
Sep 5 18:16:51 daemon err syslog: dhcpc:Lease of 10.100.1.106 obtained, lease time 10494
Sep 5 18:16:55 daemon warn kernel: ^[[0;36;44mBroadcom Packet Flow Cache flushing the flows^[[0m


Not very helpful, is it? As you can see, the connection re-establishes itself after a few minutes. I recently did a factory reset on the router and reloaded a saved configuration file. This had no effect.

Any suggestions much appreciated.

Edit to add more info. Should have mentioned this is a 7800DXL. Further log entries:-

Sep 5 21:34:55 daemon err syslog: dhcpd:sending OFFER of 192.168.1.9
Sep 5 21:34:59 daemon err syslog: dhcpd:sending ACK to 192.168.1.9
Sep 5 21:35:04 daemon err syslog: dhcpd:sending OFFER of 192.168.1.100
Sep 5 21:35:04 daemon err syslog: dhcpd:sending OFFER of 192.168.1.100
Sep 5 21:35:05 daemon err syslog: dhcpd:sending ACK to 192.168.1.100
Sep 5 21:35:07 daemon err syslog: dhcpd:sending ACK to 192.168.1.3
Sep 5 21:35:13 daemon info syslog: dhcp6c restart..
Sep 5 21:58:58 daemon err syslog: dhcpd:sending OFFER of 192.168.1.5
Sep 5 21:58:58 daemon err syslog: dhcpd:sending ACK to 192.168.1.5
Sep 5 21:59:51 daemon err syslog: dhcpd:sending ACK to 192.168.1.6
Sep 5 22:04:42 daemon err syslog: dhcpd:sending ACK to 192.168.1.1
Sep 5 22:05:00 daemon err syslog: dhcpd:sending ACK to 192.168.1.9
Sep 5 22:05:05 daemon err syslog: dhcpd:sending ACK to 192.168.1.100
Sep 5 22:05:08 daemon err syslog: dhcpd:sending ACK to 192.168.1.3
Sep 5 22:21:10 daemon err syslog: dhcpd:sending ACK to 192.168.1.2
Sep 5 22:25:16 daemon err syslog: dhcpd:sending ACK to 192.168.1.6
Sep 5 22:28:59 daemon err syslog: dhcpd:sending ACK to 192.168.1.5
Sep 5 22:34:42 daemon err syslog: dhcpd:sending ACK to 192.168.1.1
Sep 5 22:34:59 daemon err syslog: dhcpd:sending ACK to 192.168.1.9
Sep 5 22:35:05 daemon err syslog: dhcpd:sending ACK to 192.168.1.100
Sep 5 22:35:07 daemon err syslog: dhcpd:sending ACK to 192.168.1.3
Sep 5 22:43:08 daemon err syslog: dhcpd:sending ACK to 192.168.1.7
Sep 5 22:43:34 daemon err syslog: dhcpd:sending ACK to 192.168.1.2
Sep 5 22:50:04 daemon err syslog: dhcpd:sending ACK to 192.168.1.6
Sep 5 22:55:51 daemon err syslog: dhcpc:Lease lost, entering init state

I'm going to add one more log in the hope that someone on here can help! Note how I'm losing the lease at exactly 3 hour intervals (to within a few seconds) at 1030, 1330 and 1630, but the loss is very brief...only for a couple of seconds or so. Something is definitely not right.

Sep 7 09:06:13 daemon info syslog: dhcp6c restart..
Sep 7 09:06:29 daemon err syslog: dhcpd:sending OFFER of 192.168.1.101
Sep 7 09:06:29 daemon err syslog: dhcpd:sending ACK to 192.168.1.101
Sep 7 09:15:04 daemon err syslog: dhcpd:sending OFFER of 192.168.1.6
Sep 7 09:15:04 daemon err syslog: dhcpd:sending ACK to 192.168.1.6
Sep 7 10:30:46 daemon err syslog: dhcpc:Lease lost, entering init state
Sep 7 10:31:01 daemon err syslog: dhcpc:Lease of 10.100.1.106 obtained, lease time 10784
Sep 7 10:31:05 daemon warn kernel: ^[[0;36;44mBroadcom Packet Flow Cache flushing the flows^[[0m
Sep 7 13:08:51 daemon err syslog: dhcpd:sending OFFER of 192.168.1.8
Sep 7 13:08:52 daemon err syslog: dhcpd:sending ACK to 192.168.1.8
Sep 7 13:30:44 daemon err syslog: dhcpc:Lease lost, entering init state
Sep 7 13:30:46 daemon err syslog: dhcpc:Lease of 10.100.1.106 obtained, lease time 10757
Sep 7 13:30:51 daemon warn kernel: ^[[0;36;44mBroadcom Packet Flow Cache flushing the flows^[[0m
Sep 7 15:34:23 daemon err syslog: dhcpd:sending ACK to 192.168.1.3
Sep 7 15:38:56 daemon err syslog: dhcpd:sending OFFER of 192.168.1.101
Sep 7 15:38:57 daemon err syslog: dhcpd:sending ACK to 192.168.1.101
Sep 7 15:42:13 daemon err syslog: dhcpd:sending OFFER of 192.168.1.6
Sep 7 15:42:13 daemon err syslog: dhcpd:sending ACK to 192.168.1.6
Sep 7 16:30:02 daemon err syslog: dhcpc:Lease lost, entering init state
Sep 7 16:30:04 daemon err syslog: dhcpc:Lease of 10.100.1.106 obtained, lease time 10777
Sep 7 16:30:08 daemon warn kernel: ^[[0;36;44mBroadcom Packet Flow Cache flushing the flows^[[0m
Sep 7 17:05:38 daemon err syslog: dhcpd:sending ACK to 192.168.1.7

Re: Lease Lost

Posted: Mon Sep 08, 2014 11:13 am
by billion_fan
Jaycee wrote:I keep losing the lease on my connection. It seems to happen every one or two hours or so but seems to be getting more frequent. I have the lease time set at 24 hours. I also disabled IPv6 for a while as I suspected this was the cause but it isn't. The router is connected to a satellite internet modem via the EWAN port and I'm not 100% sure that it's the router and not the modem that's at fault. The router is running firmware 2.32d and this problem started about a month ago.

Here's the text from the log when the problem occurs:-

Sep 5 17:13:11 daemon crit kernel: eth2 (switch port: 2) Link UP 100 mbps full duplex
Sep 5 17:13:11 daemon info kernel: br0: topology change detected, propagating
Sep 5 17:13:11 daemon info kernel: br0: bridge group port 2(eth2) entering forwarding state
Sep 5 17:13:43 daemon err syslog: dhcpd:sending OFFER of 192.168.1.9
Sep 5 17:13:43 daemon err syslog: dhcpd:sending ACK to 192.168.1.9
Sep 5 18:11:46 daemon err syslog: dhcpc:Lease lost, entering init state
Sep 5 18:16:51 daemon err syslog: dhcpc:Lease of 10.100.1.106 obtained, lease time 10494
Sep 5 18:16:55 daemon warn kernel: ^[[0;36;44mBroadcom Packet Flow Cache flushing the flows^[[0m


Not very helpful, is it? As you can see, the connection re-establishes itself after a few minutes. I recently did a factory reset on the router and reloaded a saved configuration file. This had no effect.

Any suggestions much appreciated.

Edit to add more info. Should have mentioned this is a 7800DXL. Further log entries:-

Sep 5 21:34:55 daemon err syslog: dhcpd:sending OFFER of 192.168.1.9
Sep 5 21:34:59 daemon err syslog: dhcpd:sending ACK to 192.168.1.9
Sep 5 21:35:04 daemon err syslog: dhcpd:sending OFFER of 192.168.1.100
Sep 5 21:35:04 daemon err syslog: dhcpd:sending OFFER of 192.168.1.100
Sep 5 21:35:05 daemon err syslog: dhcpd:sending ACK to 192.168.1.100
Sep 5 21:35:07 daemon err syslog: dhcpd:sending ACK to 192.168.1.3
Sep 5 21:35:13 daemon info syslog: dhcp6c restart..
Sep 5 21:58:58 daemon err syslog: dhcpd:sending OFFER of 192.168.1.5
Sep 5 21:58:58 daemon err syslog: dhcpd:sending ACK to 192.168.1.5
Sep 5 21:59:51 daemon err syslog: dhcpd:sending ACK to 192.168.1.6
Sep 5 22:04:42 daemon err syslog: dhcpd:sending ACK to 192.168.1.1
Sep 5 22:05:00 daemon err syslog: dhcpd:sending ACK to 192.168.1.9
Sep 5 22:05:05 daemon err syslog: dhcpd:sending ACK to 192.168.1.100
Sep 5 22:05:08 daemon err syslog: dhcpd:sending ACK to 192.168.1.3
Sep 5 22:21:10 daemon err syslog: dhcpd:sending ACK to 192.168.1.2
Sep 5 22:25:16 daemon err syslog: dhcpd:sending ACK to 192.168.1.6
Sep 5 22:28:59 daemon err syslog: dhcpd:sending ACK to 192.168.1.5
Sep 5 22:34:42 daemon err syslog: dhcpd:sending ACK to 192.168.1.1
Sep 5 22:34:59 daemon err syslog: dhcpd:sending ACK to 192.168.1.9
Sep 5 22:35:05 daemon err syslog: dhcpd:sending ACK to 192.168.1.100
Sep 5 22:35:07 daemon err syslog: dhcpd:sending ACK to 192.168.1.3
Sep 5 22:43:08 daemon err syslog: dhcpd:sending ACK to 192.168.1.7
Sep 5 22:43:34 daemon err syslog: dhcpd:sending ACK to 192.168.1.2
Sep 5 22:50:04 daemon err syslog: dhcpd:sending ACK to 192.168.1.6
Sep 5 22:55:51 daemon err syslog: dhcpc:Lease lost, entering init state

I'm going to add one more log in the hope that someone on here can help! Note how I'm losing the lease at exactly 3 hour intervals (to within a few seconds) at 1030, 1330 and 1630, but the loss is very brief...only for a couple of seconds or so. Something is definitely not right.

Sep 7 09:06:13 daemon info syslog: dhcp6c restart..
Sep 7 09:06:29 daemon err syslog: dhcpd:sending OFFER of 192.168.1.101
Sep 7 09:06:29 daemon err syslog: dhcpd:sending ACK to 192.168.1.101
Sep 7 09:15:04 daemon err syslog: dhcpd:sending OFFER of 192.168.1.6
Sep 7 09:15:04 daemon err syslog: dhcpd:sending ACK to 192.168.1.6
Sep 7 10:30:46 daemon err syslog: dhcpc:Lease lost, entering init state
Sep 7 10:31:01 daemon err syslog: dhcpc:Lease of 10.100.1.106 obtained, lease time 10784
Sep 7 10:31:05 daemon warn kernel: ^[[0;36;44mBroadcom Packet Flow Cache flushing the flows^[[0m
Sep 7 13:08:51 daemon err syslog: dhcpd:sending OFFER of 192.168.1.8
Sep 7 13:08:52 daemon err syslog: dhcpd:sending ACK to 192.168.1.8
Sep 7 13:30:44 daemon err syslog: dhcpc:Lease lost, entering init state
Sep 7 13:30:46 daemon err syslog: dhcpc:Lease of 10.100.1.106 obtained, lease time 10757
Sep 7 13:30:51 daemon warn kernel: ^[[0;36;44mBroadcom Packet Flow Cache flushing the flows^[[0m
Sep 7 15:34:23 daemon err syslog: dhcpd:sending ACK to 192.168.1.3
Sep 7 15:38:56 daemon err syslog: dhcpd:sending OFFER of 192.168.1.101
Sep 7 15:38:57 daemon err syslog: dhcpd:sending ACK to 192.168.1.101
Sep 7 15:42:13 daemon err syslog: dhcpd:sending OFFER of 192.168.1.6
Sep 7 15:42:13 daemon err syslog: dhcpd:sending ACK to 192.168.1.6
Sep 7 16:30:02 daemon err syslog: dhcpc:Lease lost, entering init state
Sep 7 16:30:04 daemon err syslog: dhcpc:Lease of 10.100.1.106 obtained, lease time 10777
Sep 7 16:30:08 daemon warn kernel: ^[[0;36;44mBroadcom Packet Flow Cache flushing the flows^[[0m
Sep 7 17:05:38 daemon err syslog: dhcpd:sending ACK to 192.168.1.7
I just tested the 7800DXL with a EWAN connection to a 8800NL and the DCHP lease updated without any issue (I set the DHCP lease on the 8800NL to 1 hour = 3600 seconds)

Sep 8 10:02:45 daemon err syslog: dhcpc:Lease of 192.168.1.101 obtained, lease time 3600
Sep 8 10:02:49 daemon warn kernel: ^[[0;36;44mBroadcom Packet Flow Cache flushing the flows^[[0m
Sep 8 10:03:17 daemon info syslog: dhcp6c restart..
Sep 8 10:20:25 daemon crit kernel: eth1 (switch port: 3) Link DOWN.
Sep 8 10:20:25 daemon info kernel: br0: bridge group port 2(eth1) entering disabled state
Sep 8 10:26:14 daemon crit kernel: eth1 (switch port: 3) Link UP 1000 mbps full duplex
Sep 8 10:26:14 daemon info kernel: br0: bridge group port 2(eth1) entering forwarding state
Sep 8 10:26:15 daemon err syslog: dhcpd:sending ACK to 192.168.2.100
Sep 8 10:32:45 daemon err syslog: dhcpc:Lease of 192.168.1.101 obtained, lease time 3600
Sep 8 11:02:45 daemon err syslog: dhcpc:Lease of 192.168.1.101 obtained, lease time 3600

So you might want to check the lease time on your a satellite internet modem/router
All times are UTC+01:00
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