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Since past few days my router (Zyxel EX5601-T1) losses public IP every few hours. I have to restart it every time to get a new IP. 

Router Info:

  • Model Name - EX5601-T1
  • Firmware Version - V5.70(ACEA.0)T56C_b8_1108

Router Logs:

Dec 24 10:39:41 daemon.info udhcpc: dhcpMsgSend: msgTypee-2147483403]
Dec 24 10:43:35 daemon.debug udhcpc: Sending renew...
Dec 24 10:43:35 daemon.info udhcpc: Lease of 10.125.X.X obtained, lease time 3032
Dec 24 10:43:35 daemon.info udhcpc: dhcpMsgSend: msgTypee-2147483403]
Dec 24 11:08:00 daemon.info dnsmasq-dhcp: sendLeaseMessageToESMD 
Dec 24 11:08:00 daemon.debug dnsmasq-dhcp: ip lease:192.168.1.224, given to MAC:X:X:X:X:X, with hostname:decoMeshXE75, Lease time:172795
Dec 24 11:08:00 daemon.debug dnsmasq-dhcp: sendLeaseMessageToESMD esmd ret=1
Dec 24 11:08:51 daemon.debug udhcpc: Sending renew...
Dec 24 11:09:43 daemon.debug udhcpc: Sending renew...
Dec 24 11:09:43 daemon.info udhcpc: Lease of 95.99.X.X obtained, lease time 3600
Dec 24 11:09:43 daemon.info udhcpc: dhcpMsgSend: msgTypee-2147483403]
Dec 24 11:18:21 daemon.debug udhcpc: Sending renew...
Dec 24 11:18:21 daemon.info udhcpc: Lease of 10.125.X.X obtained, lease time 3031
Dec 24 11:18:21 daemon.info udhcpc: dhcpMsgSend: msgTypee-2147483403]
Dec 24 11:39:45 daemon.debug udhcpc: Sending renew...
Dec 24 11:43:37 daemon.debug udhcpc: Sending renew...
Dec 24 11:51:00 daemon.debug udhcpc: Sending renew...
Dec 24 11:53:04 daemon.debug udhcpc: Sending renew...
Dec 24 11:56:37 daemon.debug udhcpc: Sending renew...
Dec 24 11:57:48 daemon.debug udhcpc: Sending renew...
Dec 24 11:59:26 daemon.debug udhcpc: Sending renew...
Dec 24 12:00:10 daemon.debug udhcpc: Sending renew...
Dec 24 12:00:51 daemon.debug udhcpc: Sending renew...
Dec 24 12:01:21 daemon.debug udhcpc: Sending renew...
Dec 24 12:01:33 daemon.debug udhcpc: Sending renew...
Dec 24 12:01:54 daemon.debug udhcpc: Sending renew...
Dec 24 12:01:57 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:05 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:10 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:13 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:14 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:15 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:16 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:24 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:28 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:30 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:31 daemon.debug udhcpc: Sending renew...
Dec 24 12:02:33 daemon.debug udhcpc: Sending renew...
Dec 24 12:05:42 daemon.debug udhcpc: Sending renew...
Dec 24 12:06:01 daemon.debug udhcpc: Sending renew...
Dec 24 12:07:17 daemon.debug udhcpc: Sending renew...
Dec 24 12:07:52 daemon.debug udhcpc: Sending renew...
Dec 24 12:08:05 daemon.debug udhcpc: Sending renew...
Dec 24 12:08:29 daemon.debug udhcpc: Sending renew...
Dec 24 12:08:41 daemon.debug udhcpc: Sending renew...
Dec 24 12:08:48 daemon.debug udhcpc: Sending renew...
Dec 24 12:08:56 daemon.debug udhcpc: Sending renew...
Dec 24 12:09:00 daemon.debug udhcpc: Sending renew...
Dec 24 12:09:00 daemon.debug udhcpc: Sending renew...
Dec 24 12:09:00 daemon.info udhcpc: dhcpMsgSend: msgTypee-2147483430]
Dec 24 12:09:00 daemon.info udhcpc: Lease lost, entering init state
Dec 24 12:09:00 daemon.debug udhcpc: Sending discover...
Dec 24 12:09:00 user.notice zcmdModuleCfg: System: Wan interface ETH_MGNT connection lost
Dec 24 12:09:04 daemon.debug udhcpc: Sending discover...
Dec 24 12:09:12 daemon.debug udhcpc: Sending discover...
Dec 24 12:09:16 daemon.debug udhcpc: Sending renew...
Dec 24 12:09:28 daemon.debug udhcpc: Sending discover...
Dec 24 12:09:30 daemon.debug udhcpc: Sending renew...
Dec 24 12:09:37 daemon.debug udhcpc: Sending renew...
Dec 24 12:09:41 daemon.debug udhcpc: Sending renew...
Dec 24 12:09:44 daemon.debug udhcpc: Sending renew...
Dec 24 12:09:45 daemon.info udhcpc: dhcpMsgSend: msgTypee-2147483430]
Dec 24 12:09:45 daemon.info udhcpc: Lease lost, entering init state
Dec 24 12:09:45 daemon.debug udhcpc: Sending discover...
Dec 24 12:09:45 user.notice zcmdModuleCfg: System: Wan interface ETH_Internet connection lost
Dec 24 12:09:46 daemon.info dnsmasq-dhcp: DHCP, IP range 192.168.1.2 -- 192.168.1.254, lease time 1d
Dec 24 12:09:46 daemon.info dnsmasq-dhcp: read /etc/ethers - 0 addresses
Dec 24 12:09:49 daemon.debug udhcpc: Sending discover...
Dec 24 12:09:52 daemon.info udhcpc: Performing a DHCP renew
Dec 24 12:09:52 daemon.debug udhcpc: Sending discover...
Dec 24 12:09:56 daemon.debug udhcpc: Sending discover...
Dec 24 12:10:00 daemon.debug udhcpc: Sending discover...
Dec 24 12:10:04 daemon.debug udhcpc: Sending discover...
Dec 24 12:10:20 daemon.debug udhcpc: Sending discover...
Dec 24 12:10:52 daemon.debug udhcpc: Sending discover...
Dec 24 12:11:05 daemon.debug udhcpc: Sending discover...
Dec 24 12:11:56 daemon.debug udhcpc: Sending discover...
Dec 24 12:12:09 daemon.debug udhcpc: Sending discover...
Dec 24 12:12:15 daemon.info udhcpc: Performing a DHCP renew
Dec 24 12:12:15 daemon.debug udhcpc: Sending discover...
Dec 24 12:12:19 daemon.debug udhcpc: Sending discover...
Dec 24 12:12:27 daemon.debug udhcpc: Sending discover...
Dec 24 12:12:43 daemon.debug udhcpc: Sending discover...
Dec 24 12:13:13 daemon.debug udhcpc: Sending discover...
Dec 24 12:13:15 daemon.debug udhcpc: Sending discover...

 Has any one faced this issue. If yes did you find a solution. 

I noticed some dhcp request not being answered today also. But in my case the subsequent request did get an answer each time, before the lease expired.

Example:

Dec 24 08:38:35 daemon.info udhcpc: dhcpMsgSend: msgType[-2147483403]
Dec 24 08:48:47 daemon.debug udhcpc: Sending renew...
Dec 24 08:58:19 daemon.debug udhcpc: Sending renew...
Dec 24 08:58:19 daemon.info udhcpc: Lease of 10.79.x.x obtained, lease time 3027

Note that you can tell the first request was received by the lease time number. This would otherwise be 3600. So apparently it was the response that got lost somehwere along the away.

I have only been monitoring my logfile since the last couple of days, so I don’t know if this sort of thing is relatively common or not.

 

 

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