Hi TP Link Omada Team,

I’m experiencing an issue with TP-Link Omada SD-WAN. I have a network setup with SD-WAN Hub and Branches. Everything works fine until I add a WAN IP alias on the Hub router. After adding the alias, the SD-WAN Hub stops communicating with the branches, and tunnels fail to establish.

From my observations:

• SD-WAN traffic seems to rely on the primary WAN IP.

• When the alias is added, traffic may originate from the alias instead of the primary WAN IP, causing the hub to reject connections.

• Static routes and NAT rules may also conflict when using WAN aliases.

What I’ve tried:

• Ensuring the SD-WAN service uses the primary WAN interface.

• Checking NAT rules and firewall settings.

• Updating to the latest firmware.

Result: SD-WAN only works if I remove the WAN IP alias.

Question to the community:
Is there a supported way to use a WAN IP alias on the Hub router without breaking SD-WAN? Or is this a known limitation? Any guidance or recommended workarounds would be greatly appreciated.

Thanks in advance!