Issue with routing table propagating incorrect route

[wspence]

So this issues just started occuring over the past 10 days. it was a real headscratcher on figuring out where the issue was.

Enviroment: 2 building that are directly linked

Building 1: 10.10.0.0/24 (Netgate pfsense xg-7100, 2.4.5-release-p1)
Building 2: 10.0.0.0/24 (Ubiquiti USG as Firewall)
Transit router 192.168.1.0/29

Everything worked fine for at least 1.5 years no issues. We get a call that they (Building 1 - 10.10.0.0/24) cant communicate with the server (10.0.0.4) on the other side and finally figure out there is a route in the pfsense Table

So you can see the static route is for 10.0.0.0/24 to go over 192.168.1.2 which is good but this route of 10.0.0.4 to go over the WAN just just started propagating and I'm not sure why.

I deleted it early last week and it popped up again today.

can anyone give me some direction on where to look at why this would be occurring.

Thanks in advance!

[viragomann]

@wspence said in Issue with routing table propagating incorrect route:

10.0.0.4

Is this one of DNS server entered in System > General Setup with a gateway stated?

[wspence]

@viragomann said in Issue with routing table propagating incorrect route:

@wspence said in Issue with routing table propagating incorrect route:

10.0.0.4

Is this one of DNS server entered in System > General Setup with a gateway stated?

Yep... Would of not thought to look there, thanks for the response

[viragomann]

@wspence
Stating a gateway here sets an according static route.
You can set the gateway to none, since there is a static route set for related subnet anyway.

[wspence]

@viragomann said in Issue with routing table propagating incorrect route:

@wspence
Stating a gateway here sets an according static route.
You can set the gateway to none, since there is a static route set for related subnet anyway.

Makes absolute sense, I just need to see who configured it that Way.