[Solved] Dynamic route missing on secondary node

[Gleeen]

I've got the following HA setup running on version 25.1.3:

ISP router	192.168.0.1
Node A	192.168.0.101
Node B	192.168.0.102
CARP Virtual IP	192.168.0.100

The issue is that, when node B has a statically assigned IP address it won't respond to ping and outbound ping fails with the error "sendto: Invalid argument".
When the same address is assigned via DHCP or when node A is not reachable I can see the following dynamic route appear and at the same time the pings start getting responses.
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Once I switch back to a static IP or node A comes back online, the route disappears again and the responses stop.
Clearly this route to the Subnet is what's missing and I can see routes just like it for all my other VLANs.

To recap:

• 192.168.0.102 statically assigned: No route
• 192.168.0.102 assigned via DHCP: No route
• 192.168.0.102 statically assigned and other note unreachable: No route

This setup had been working well for years. Due to some issues with a new router sent by my ISP I fiddled with some of the settings (IPv6 disabled, interface IP temporarily changed to different IP and reverted) and afterwards I noticed this issue.

Does anybody have an idea why this route keeps disappearing or where I could look to begin troubleshooting this issue?

Thanks

[Gleeen]

Nevermind. I was looking through everything once more and found the issue. When making the changes the subnet mask for that interface accidentally got changed from /24 to /32. Correcting this back to /24 made the route reappear.