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Deco M9 plus V2 does not support NAT Loopback / Hairpinning

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Deco M9 plus V2 does not support NAT Loopback / Hairpinning

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Deco M9 plus V2 does not support NAT Loopback / Hairpinning
Deco M9 plus V2 does not support NAT Loopback / Hairpinning
2019-12-16 14:58:25 - last edited 2020-03-14 05:44:18
Model: Deco M9 Plus  
Hardware Version: V2
Firmware Version: Latest (1.2.10 Build 20190809 Rel. 54285)

Hi.

 

Just bought a Deco M9 (v2) set and set up port forwarding. Unfortunatly it's not working as it should.  It works only for external (WAN) traffic and not internally (from home). 

What I'm doing redirecting a public address to a local one. From the internet to local it works (eg phone connected via 4G), but from the LAN side it doens't (phone on WIFI). As the NAT is used for home automation server this is a very serious limitation. I did not buy router to use 4G iso wifi.

 

Any tips on how ot enable/fix this? NAT loopback / hairpinning is very common and for me it seems strange that such a expensive device does not support it....

Regards,

R.

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#1
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1 Accepted Solution
Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning -Solution
2020-03-14 05:42:23 - last edited 2020-03-14 05:44:18

@Kevin_Z 

 

it does not work on this router. It did on two other brands but not on this one. I installed my previous router and it works again!

 

im very disappointed... the m9 v2 was expensive but it lacks many features.

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#10
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Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning
2019-12-17 02:46:58

@Robert_M 

 

Hello, the NAT loopback is enabled by default. 

 

How did you access it from locally with the WAN IP address? Please show us a screenshot of it. 

 

Besides, you can open a port for a local server and verify whether you can access it with LAN IP + port number and WAN IP + port number locally. 

 

Good day. 

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router Archer BE800 New Firmware Added Support for EasyMesh in AP Mode, DoH&DoT, and 3-Band MLO Connection Archer AX90 New Firmware Added Support for EasyMesh and Ethernet Backhaul If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.
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Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning
2019-12-17 07:07:43

@Kevin_Z 

 

Thanks for the quick reply. I'm running a "Home Assistant" server that has a https web interface running on port 8123.

 

Within the DECO app I added Port Forwarding: 

Internal IP: 192.168.178.192

External port: 443

Internal port:  8123

 

I tried the following testcases:

  • WAN (connected from outside world):   https://mydummyadress.duckdns.org      -> server is responding
  • LAN (Connected to DECO M9 WIFI):    https://192.168.178.192:8123                  -> server is responding
  • LAN (Connected to DECO M9 WIFI):    https://mydummyadress.duckdns.org      -> server is not accesable 

 

Note 1: I have been running the exact same setup with my two previous routers and this always worked. 

Note 2: I also tried disabling the DECO virus protection but that was not the problem.

 

 

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#3
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Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning
2019-12-22 06:42:34

@Kevin_Z 

 

Hi Kevin, any feedback yet?

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#4
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Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning
2019-12-30 19:17:46

Bump - still no solution....

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#5
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Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning
2020-01-22 07:32:55

@Kevin_Z 

 

Any feedback on this issue?  When will it be solved?

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#6
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Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning
2020-02-11 09:34:10

@Robert_M 

 

Hello, sorry to respond late.

 

Have you ever tried to change the DNS on your computer? Like 8.8.8.8 or 8.8.4.4?

 

Besides, you can change the DNS of the Deco also.

 

 

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router Archer BE800 New Firmware Added Support for EasyMesh in AP Mode, DoH&DoT, and 3-Band MLO Connection Archer AX90 New Firmware Added Support for EasyMesh and Ethernet Backhaul If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.
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#7
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Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning
2020-02-22 21:06:57
Tried but doesn’t make a difference. It’s really a bug in the deco routers firmware.
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#8
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Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning
2020-02-24 01:48:39

@Robert_M 

 

Thanks for your reply. I double-checked the information you provided before, you use the domain name to access the server on the LAN network, actually, DDNS just binds the WAN IP and your domain together. We cannot access a website by using the WAN IP or domain if no port forwarding rules are set up for certain servers.

 

That is to say, you need access the https server via the domain name with the port number. 

 

So it is not a bug; to verify whether DDNS works well, we use 'nslookup' to resolve the domain to see if it leads to the public WAN IP address of Deco. If the domain name can be resolved to an IP address, then DDNS is successfully bound to the IP address.

 

Good day. 

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router Archer BE800 New Firmware Added Support for EasyMesh in AP Mode, DoH&DoT, and 3-Band MLO Connection Archer AX90 New Firmware Added Support for EasyMesh and Ethernet Backhaul If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.
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#9
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Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning -Solution
2020-03-14 05:42:23 - last edited 2020-03-14 05:44:18

@Kevin_Z 

 

it does not work on this router. It did on two other brands but not on this one. I installed my previous router and it works again!

 

im very disappointed... the m9 v2 was expensive but it lacks many features.

Recommended Solution
  5  
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#10
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Re:Deco M9 plus V2 does not support NAT Loopback / Hairpinning
2020-03-16 12:53:47

@Kevin_Z 

 

THIS IS UNBELIEVABLE! I just found out you know about this issue!

https://community.tp-link.com/en/home/forum/topic/151141?page=2

 

This descibes my problem!!!! WHY would you let me spend time on it? It has to be fixed in the new firmware for the M9 V2.

This TP-LINK is a joke and the worst product I have encoutered in a very long time!

 

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