I'm stuck.  I have set up DHCP relay for my Omada network according to the TP-Link Omada Switch DHCP Relay Configuration Guide and can successfully get an IP address/mask/gateway from dnsmasq running on an external Linux PC.

However what I can't do is talk/ping anything other than the switch (TL2428P) and the IP address programmed for the VLAN on the Omada network.

The switch is on VLAN1 and the DHCP relay set-up is for VLAN30.  

VLAN1 is 10.0.1.X/26 and VLAN30 is 192.168.30.X/24.

What am I missing?