Unwanted route that keeps coming back

Started by abenaou, December 04, 2025, 05:36:20 AM

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December 04, 2025, 05:36:20 AM Last Edit: December 05, 2025, 01:44:01 AM by abenaou
Hi all,

I have 2 opnsense firewalls, both running 25.7.8 and to each their vlan.
They're both interconnected by their LAN interfaces, in case WAN1 fails the traffic goes through the gateway of WAN2.
No the issue I have is that a route shows up on its own, I didn't create it, and when I delete it keeps coming back bringing my server down :
The faulty route is 10.99.200.180 being sent to 10.98.200.1 which goes through WAN2, I didn't add it and even when I delete it, it keeps coming back.
Can you please help?

Thanks

Here is more details about the route :

Proto   Destination   Gateway   Flags   MTU   Netif   Netif (name)
ipv4   10.99.200.0/24   link#14   U   1500   Vlan0.2   LAN
ipv4   10.99.200.1   Link#10   UHS   16384   lo0   loopback
ipv4   10.99.200.180   10.99.200.1   UGHS   1500   Vlan0.6   LAN98

The unwanted route is 10.99.200.180 being sent to 10.98.200.1 which is another firewall, the traffic ends up being blocked and rejected, making the server 10.99.200.180 isolated from the internet.

Do you have any ideas?

Thanks

UGHS - that route is static. It's configured somewhere. Do you have configured a gateway on vlan0.6? Remove that.
Deciso DEC750
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