Hello,
I've a problem with my default gateway.
Situation: We've two switches, connected to one switch, which is connected to the router.
On the subnet we've two VLAN's with following details:

Best practice is adding the first or last host address to the default gateway. But because of the VLAN's I've now two networks.

We currently solved it by adding an IP from a new network to Fa 0/0 that neither belongs the two VLAN's.