I purchased a dedicated server installed with Ubuntu 18.04 which was given an IPv6 Block.
I used the guide How to set up IPv6 on Ubuntu 16.04 before.
Since Ubuntu 18.04 uses netplan instead of /etc/network/interfaces, the above link does not work anymore.
Yesterday, I set up /etc/netplan/01-netcfg.yaml as following:
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: yes
dhcp6: no
addresses: ['2001:bc8:xxx:100::/56']
Things worked pretty well, but today I can no longer ping any IPv6 addresses. Tried in many ways but so far I can have no good result.
I want to know the exact way of implementing IPv6 under this circumstance, how should I do?