ER605 ER7206 Failed to Obtain the IP address for WAN With 31-bit Subnet Mask - [Case Closed]

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ER605 ER7206 Failed to Obtain the IP address for WAN With 31-bit Subnet Mask - [Case Closed]

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
ER605 ER7206 Failed to Obtain the IP address for WAN With 31-bit Subnet Mask - [Case Closed]
ER605 ER7206 Failed to Obtain the IP address for WAN With 31-bit Subnet Mask - [Case Closed]
2021-12-10 10:20:46 - last edited 2022-04-02 12:15:16

This Article Applies to:

 

ER605(UN)_V1_1.1.1_Build 20210723 or above firmware

ER7206(UN)_V1_1.1.1_Build 20210723 or above firmware

 

Background:

 

We noticed that a few ISPs may provide WAN IP Addresses with 31-bit or 32-bit subnet masks for Internet access.

However, our Business Routers doesn’t accept such WAN IP addresses, so the router will reject the offered WAN IP address from ISP, resulting in a WAN configuration failure.

 

Related feedback post:

ER605 declines DHCP offers from LTE Modem

The System Log of the ER605 shows the following error messages:

[osg:xx-xx-xx-xx-xx-xx] failed to obtain the IP address for WAN because IP-Address/Gateway can't be a broadcast address or a network address (IP-Address=xxx.xxx.xxx.xxx, Mask=255.255.255.255, Gateway=xxx.xxx.xxx.x).

 

Available Solutions:

 

To resolve the issue quickly, here we have made a Beta firmware for you,

 

ER605(UN)_v1_1.1.1_Build 20210926 (Beta)

ER7206(UN)_v1_1.1.1_Build 20210926 (Beta)

Release note:

Support the WAN IP addresses with 31-bit or 32-bit subnet masks.

 

 [Case Closed]  Update: 

 

The issue has been fixed in the official 1.2.0 firmware, please check for an update from Here.

 

Thank you for your attention!

 

 

Feedback:

 

If this was helpful click the thumbs-up (Kudos) button below.

If this solved your issue, I'd encourage you to comment below, so others can benefit from that.

 

If the solution doesn't work for you, your case is probably different from what is described here.

In that case, please feel free to click Start a New Thread and elaborate on the problem so that we can try to help you further.

 

Thank you for your great cooperation and patience!

TP-Link Support Team

2022 TP-Link Wi-Fi 7 Product Launch Event | Watch the Replay at https://www.tp-link.com/us/wifi7/event/.
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