Quick fix for IPv6 address loss in Oracle Cloud

Quick fix for IPv6 address loss in Oracle Cloud

IPv6 matters

Resources

2023.06.23

👣 #Oracle #IPv6 #DHCP

IPv6 addresses are lost in my VMs on Oracle Cloud, probability caused by the DHCP issue.

Here’s a quick fix I found that works, just enable dhcp6 in the /etc/netplan/50-cloud-init.yaml.

For instance:

network:
  version: 2
  ethernets:
    enp0s3:
      dhcp4: true
      match:
        macaddress: 00:00:00:xx:xx:xx
      set-name: enp0s3
      dhcp6: true

That’s it. 💯

My previous solution seems not working anymore. Just have a record FYI:

  1. For AMD machines

    sudo dhclient -6 ens3
    
  2. For ARM machines

    sudo dhclient -6 enp0s3
    

ens3 or enp0s3 is the network interface set by default. Check the correct interface name with the ip addr command.

THE END

林宏

Frank Lin

Hey, there! This is Frank Lin (@flinhong), one of the 1.41 billion . This 'inDev. Journal' site holds the exploration of my quirky thoughts and random adventures through life. Hope you enjoy reading and perusing my posts.

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