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Forum Discussion
XR500 DHCP issue
I've had this router for 4 months now and it works fine most of the time. Once in a while I'll notice that some LAN devices become unresponsive, when I look into the issue it turns out that they have IPs issued by my ISP's DHCP servers. Rebooting the router solves the problem. My WAN connection utilizes DHCP, but I can't figure out why local devices within the NAT would be getting IPs from an external DHCP rather than from the router all of a sudden.
Anyone else run into a similar problem?
207 Replies
Running XR500 v2.3.2.66;
Been using the router for 2+ years without major problem until yesterday;
1 LAN connection to router with N WiFi connections;
LAN connection randomly dropped off around every 5 mins and reconnect after 1 min, not noticing issue with WiFi devices while LAN PC is dropped off;
Notice the "[DumaOS] Error parsing line in ARP table" for 00:01:5c:64:ae:46;
While my PC's mac addr is d8:cb:8a:57:21:ac, I cannot identify the mac addr 00:01:5c:64:ae:46, it's not the router's mac addr nor the modem's and obviously not any one of the on/offline device under Device Manager -> Network Map.
Note: no setting has changed other than the always-on auto-firmware update which might have updated firmware a week or two ago.
p.s. I honestly don't want to load debug firmware and try more, typing this reply already spent too much of my time... good luck.
[DumaOS] DHCP lease change., Monday, January 11, 2021 03:00:03 [DumaOS] DHCP new event., Monday, January 11, 2021 03:00:03 [DHCP IP: 192.168.1.2] to MAC address d8:cb:8a:57:21:ac, Monday, January 11, 2021 03:00:03 [DumaOS] Error parsing line in ARP table: 'fe80::201:5cff:fe64:ae46 dev brwan lladdr 00:01:5c:64:ae:46 router STALE', Monday, January 11, 2021 02:59:51 [DumaOS] Error parsing line in ARP table: 'fe80::201:5cff:fe64:ae46 dev brwan lladdr 00:01:5c:64:ae:46 router STALE', Monday, January 11, 2021 02:59:35 [DumaOS] DHCP lease change., Monday, January 11, 2021 02:46:45 [DumaOS] DHCP new event., Monday, January 11, 2021 02:46:45 [DHCP IP: 192.168.1.2] to MAC address d8:cb:8a:57:21:ac, Monday, January 11, 2021 02:46:45 [DumaOS] Error parsing line in ARP table: 'fe80::201:5cff:fe64:ae46 dev brwan lladdr 00:01:5c:64:ae:46 router STALE', Monday, January 11, 2021 02:46:12 [DumaOS] DHCP lease change., Monday, January 11, 2021 02:46:09 [DumaOS] DHCP new event., Monday, January 11, 2021 02:46:09 [DHCP IP: 192.168.1.2] to MAC address d8:cb:8a:57:21:ac, Monday, January 11, 2021 02:46:09 [DumaOS] Error parsing line in ARP table: 'fe80::201:5cff:fe64:ae46 dev brwan lladdr 00:01:5c:64:ae:46 router STALE', Monday, January 11, 2021 02:46:08 [DumaOS] Error parsing line in ARP table: 'fe80::201:5cff:fe64:ae46 dev brwan lladdr 00:01:5c:64:ae:46 router STALE', Monday, January 11, 2021 02:46:03 [DumaOS] Error parsing line in ARP table: 'fe80::201:5cff:fe64:ae46 dev brwan lladdr 00:01:5c:64:ae:46 router STALE', Monday, January 11, 2021 02:45:47 [DumaOS] Error parsing line in ARP table: 'fe80::201:5cff:fe64:ae46 dev brwan lladdr 00:01:5c:64:ae:46 router STALE', Monday, January 11, 2021 02:45:44 [DumaOS] DHCP lease change., Monday, January 11, 2021 02:44:55 [DumaOS] DHCP new event., Monday, January 11, 2021 02:44:55 [DHCP IP: 192.168.1.6] to MAC address 40:d2:8a:8b:a7:e4, Monday, January 11, 2021 02:44:55 [admin login] from source 192.168.1.2, Monday, January 11, 2021 02:44:44 [DumaOS] DHCP lease change., Monday, January 11, 2021 02:42:06 [DumaOS] DHCP new event., Monday, January 11, 2021 02:42:06 [DHCP IP: 192.168.1.2] to MAC address d8:cb:8a:57:21:ac, Monday, January 11, 2021 02:42:06 [DumaOS] Error parsing line in ARP table: 'fe80::79e2:676f:7459:3391 dev br0 lladdr d8:cb:8a:57:21:ac STALE', Monday, January 11, 2021 02:41:43 [DumaOS] Error parsing line in ARP table: 'fe80::201:5cff:fe64:ae46 dev brwan lladdr 00:01:5c:64:ae:46 router STALE', Monday, January 11, 2021 02:41:43 [DumaOS] DHCP lease change., Monday, January 11, 2021 02:41:37 [DumaOS] DHCP new event., Monday, January 11, 2021 02:41:37 [DHCP IP: 192.168.1.2] to MAC address d8:cb:8a:57:21:ac, Monday, January 11, 2021 02:41:37 [DumaOS] Error parsing line in ARP table: 'fe80::79e2:676f:7459:3391 dev br0 lladdr d8:cb:8a:57:21:ac STALE', Monday, January 11, 2021 02:41:13 [DumaOS] Error parsing line in ARP table: 'fe80::201:5cff:fe64:ae46 dev brwan lladdr 00:01:5c:64:ae:46 router STALE', Monday, January 11, 2021 02:41:13
- JediZavv that MAC address belongs to Arris so I assume that is the make of your modem. It might be that your public IP address renewed and it took the router a little while to reconnect properly. Have you encountered the issue again since then?
