ISSUE: Wireless clients that reassociate after a router reboot fail to get a DNS assignment if DNS Relay is off
EXPECTED: Clients are assigned the same DNS Servers that the ISP assigns to the router.
TEMPORARY WORKAROUNDS: Configure the router to use DNS Relay, assign static DNS servers in the client configurations, or manually set the uplink speed in the QOS Engine of the router.
This is a timing-dependent issue. My theory is that the router and client is not completing the DNS server assignment in a wireless DHCP conversation if the router hasn't finished its boot-up sequence.
When the QoS engine does a WAN speed measurement (default) and DNS Relay is off (not default) and the router is rebooted following a configuration change, some wireless clients do not receive the ISP DNS servers in their DHCP assignment.
The system that experienced the problem was 001DE02AA0FD, a linux system. I've also had this problem with a single XP system at 00909679D2C9. It has not occured yet on Vista (where the timing of wireless reconnection is a longer cycle, perhaps). This does not occur on all of the XP systems that I have and I am not certain if it might be intermittant, but the two systems that it has occurred on are both connected via the wireless. This has been noticed twice over a week's time.
In the XP case, a DHCP Release / Renew cycle provided the DNS addresses.
In the Linux (Ubuntu 8.10) case, disabling and reenabling networking provided the DNS addresses.
Firmware Version : 1.21, 2008/10/09 H/W A2
The log is only somewhat helpful.
[INFO] Sat Nov 01 16:50:26 2008 Firmware upgrade server wrpd.dlink.com.tw is at IP address 210.242.32.129
[INFO] Sat Nov 01 16:50:26 2008 Time synchronized
[INFO] Sat Nov 01 16:50:34 2008 Requesting time from 64.247.17.254
[INFO] Sat Nov 01 16:50:34 2008 Time server us.pool.ntp.org is at IP address 64.247.17.254
[INFO] Sat Nov 01 16:50:34 2008 Blocked outgoing ICMP packet (ICMP type 3) from 192.168.177.102 to 4.2.2.2
[INFO] Sat Nov 01 16:50:34 2008 Blocked incoming GRE packet from X.X.183.2 to 71.111.X.X
[INFO] Sat Nov 01 16:50:33 2008 Above message repeated 4 times
[INFO] Sat Nov 01 16:50:32 2008 Blocked outgoing ICMP packet (ICMP type 3) from 192.168.177.102 to 4.2.2.1
[INFO] Sat Nov 01 16:50:32 2008 Blocked incoming GRE packet from X.X.183.2 to 71.111.X.X
[INFO] Sat Nov 01 16:50:31 2008 Above message repeated 1 times
[INFO] Sat Nov 01 16:50:31 2008 KJ7RL 00-1e-58-f3-26-e5: Wireless system with MAC address 0013CED06C37 secured and linked
[INFO] Sat Nov 01 16:50:31 2008 KJ7RL 00-1e-58-f3-26-e5: Wireless system with MAC address 0013CED06C37 associated
[INFO] Sat Nov 01 16:50:31 2008 Above message repeated 1 times
[INFO] Sat Nov 01 16:50:31 2008 Blocked incoming GRE packet from X.X.183.2 to 71.111.X.X
[INFO] Sat Nov 01 16:50:31 2008 Above message repeated 1 times
[INFO] Sat Nov 01 16:50:30 2008 Gateway remote administration enabled on port: XXXXX
[INFO] Sat Nov 01 16:50:30 2008 WAN interface speed measurement completed. Upstream speed is 724 kbps
[INFO] Sat Nov 01 16:50:28 2008 KJ7RL 00-1e-58-f3-26-e5: Wireless system with MAC address 001DE02AA0FD secured and linked
[INFO] Sat Nov 01 16:50:28 2008 KJ7RL 00-1e-58-f3-26-e5: Wireless system with MAC address 00909679D2C9 secured and linked
[INFO] Sat Nov 01 16:50:27 2008 KJ7RL 00-1e-58-f3-26-e5: Wireless system with MAC address 00909679D2C9 associated
[INFO] Sat Nov 01 16:50:27 2008 Above message repeated 1 times
[INFO] Sat Nov 01 16:50:25 2008 KJ7RL 00-1e-58-f3-26-e5: Wireless system with MAC address 001DE02AA0FD associated
[INFO] Sat Nov 01 16:50:25 2008 Above message repeated 1 times
[INFO] Sat Nov 01 16:50:22 2008 KJ7RL 00-1e-58-f3-26-e5: Wireless system with MAC address 0013492A5516 secured and linked
[INFO] Sat Nov 01 16:50:22 2008 KJ7RL 00-1e-58-f3-26-e5: Wireless system with MAC address 0013492A5516 associated
[INFO] Sat Nov 01 16:50:22 2008 Above message repeated 1 times
[INFO] Sat Nov 01 16:50:18 2008 Wireless link is up
[INFO] Sat Nov 01 16:50:17 2008 Starting DHCP server
[INFO] Sat Nov 01 16:50:11 2008 Estimating speed of WAN interface
[INFO] Sat Nov 01 16:50:10 2008 Obtained IP Address using DHCP. IP address is 71.111.X.X
[INFO] Sat Nov 01 16:50:09 2008 Bringing up WAN using DHCP
[INFO] Sat Nov 01 16:50:09 2008 WAN interface cable has been connected
[INFO] Sat Nov 01 16:50:08 2008 LAN interface is up
[INFO] Sat Nov 01 16:50:08 2008 LAN Ethernet Carrier Detected
[INFO] Sat Nov 01 16:50:07 2008 Device initialized
[WARN] Sat Nov 01 16:50:07 2008 Wireless schedule init
[INFO] Sat Nov 01 16:50:07 2008 guest: Unlock AP setup
[INFO] Sat Nov 01 16:50:07 2008 primary: Unlock AP setup
[INFO] Sat Nov 01 16:50:07 2008 Syslog server set as IP address 192.168.177.255
[INFO] Sat Nov 01 16:50:07 2008 No Internet access policy is in effect. Unrestricted Internet access allowed to everyone
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Topic: Reassociate after router reboot, sometimes no DNS assignment if DNS Relay off (Read 4445 times)