This is just a note about useful commands to run IPv6 in Mininet.
Since IPv6 address is automatically configured according to MAC address
Disable IPv6 on OVS interfaces
Binding IPv6 address on OVS interfaces is meaningless and resource wasting.
NOTE: This only disable IPv6 on OVS interfaces. Emulated hosts are not affected.
Set IPv6 address
Check IPv6 routing table
Ping6 (must specify interface for local v6 address)