Additional information

On my edge switches I have a my management vlan configured and my access vlans via a port channel

interface Vlan60
description TestUplinkManagement
ip address 172.31.31.11 255.255.255.0

interface Port-channel1
switchport trunk allowed vlan 60,70-73
switchport trunk native vlan 666
switchport mode trunk
end

an ip route

ip route 0.0.0.0 0.0.0.0 Vlan60 (have also used 172.31.31.1)

with this configuration I can ping not only vlans 70-73 but all my other vlans.

however !

If I delete the ip route and change to a default gateway I can only ping 172.31.31.1 and nothing else !!