topic Re: Zyxel NR5103E - IP Passthrough Unable to get Wan IP only internal 192.168 address - Unifi UDM PR in Broadband

Zyxel NR5103E - IP Passthrough Unable to get Wan IP only internal 192.168 address - Unifi UDM PRO SE

aronanbo — Sat, 05 Aug 2023 08:42:39 GMT

Hi all I have just joined 3 Mobile in the UK and currently have a UDM Pro SE.

I have moved my primary connection which is 80/20 Mbps to the secondary and wanted to use the three 5g routers in (IP passthrough / Bridge mode ).

I cannot get it to give me the wan IP or any service.

Do you have any help or suggestions?

It keeps giving me a local or no IP. it works connected directly to my PC via ethernet giving me a wan IP but no luck with the UDM

https://www.reddit.com/r/Ubiquiti/comments/15iahyz/unifi_dream_machine_se_three_mobile_5g_nr5103e_ip/?utm_source=share&utm_medium=web2x&context=3

https://community.three.co.uk/t5/Broadband/Eero-5-Wifi-Mesh-NR5103E-IP-Passthrough/td-p/10099

https://community.three.co.uk/t5/Network/Zyxel-NR5103E-IP-Passthrough/m-p/7467

https://support.zyxel.eu/hc/en-us/articles/7254914487186-How-to-put-my-router-in-Bridge-mode

Re: Zyxel NR5103E - IP Passthrough Unable to get Wan IP only internal 192.168 address - Unifi UDM PR

db12 — Mon, 07 Aug 2023 17:36:58 GMT

This was working absolutely fine until recently, I cross posted to Is preview

Post in thread 'New Three 5G Hub (NR5103E)' https://www.ispreview.co.uk/talk/threads/new-three-5g-hub-nr5103e.38663/post-316282

Re: Zyxel NR5103E - IP Passthrough Unable to get Wan IP only internal 192.168 address - Unifi UDM PR

db12 — Mon, 07 Aug 2023 17:39:39 GMT

Just found this, seems IPV6 has broken passthrough:

https://community.three.co.uk/t5/Broadband/Zyxel-NR5103E-no-longer-get-public-IPv4-address-how-do-I-use-IPv6-for-server/td-p/15741

Re: Zyxel NR5103E - IP Passthrough Unable to get Wan IP only internal 192.168 address - Unifi UDM PR

jezza007 — Thu, 28 Sep 2023 10:43:46 GMT

Same symptom has just happened to me on 24.09.2023
I have a Huawei H122-373 on firmware 11.0.2.11(H329SP4C21)
It's been on this firmware for as long as I can recall since around August 2022 I think it updated.
It's been working absolutely rock solid on bridge mode until 24th Septmeber 2023,
Absolutely appauling, that something clearly has changed on three network, as nothing has changed my side, I run a tight ship on my firewall.
I have factory reset the Huawei, and still no joy.
I will investigate further and recreate the APN to use IPv4 only and see if that fixes it.

Re: Zyxel NR5103E - IP Passthrough Unable to get Wan IP only internal 192.168 address - Unifi UDM PR

jezza007 — Sat, 30 Sep 2023 09:50:59 GMT

Got no idea why this suddenly stopped working, but heres an update on how I resolved it.

Disconnect all network cables from modem
Factory reset the modem
Connect using default wifi password
Set to bridge mode
Restart modem
Ensure your firewall is already powered up then connect Ethernet to LAN port
Only now did it get correct WAN IP address

Several attempts of factory reset in any other order/method failed with 192.168 address getting locked in

Re: Zyxel NR5103E - IP Passthrough Unable to get Wan IP only internal 192.168 address - Unifi UDM PR

bazantus — Fri, 06 Oct 2023 12:06:25 GMT

Hi,

non-techie here trying to get my head around it. Can somebody kindly put step-by-step instructions for Zyxel NR5103E to ack as a modem / bridge and feed into a Synology or Asus router (so all WiFi traffic, firewall etc is done on Synology)?
I keep running into issues with IP addresses, WAN and LAN addresses.
WWW has a few suggestions - but either incomplete or contradictory (e.g., some say you need to disable IPv^, some suggest to disable firewall - but no details how).

thanks!

Re: Zyxel NR5103E - IP Passthrough Unable to get Wan IP only internal 192.168 address - Unifi UDM PR

bazantus — Fri, 06 Oct 2023 12:31:37 GMT

one other question is how to ensure it's Lan-Wan (os should it be?)