I have been offline for a couple of days when I think I ran into a new firmware bug on my Cisco RV340 router. I have Cisco SG300-28 layer 3 switch which I created a router VLAN with 1 access port with an IP with a 30 bit mask connected to my router. I worked on it for a couple of days and finally gave up. I posted on Cisco small business web site. I am now running a older firmware version which works. It has something to due with changing the VLAN1 IP network.