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Cybera has confirmed that most users who use TELUS or Shaw, University of Alberta users (via WiFi), and Concordia users have IPv6 connectivity. If you fall into one of these groups, please use the above links to verify and if at all possible, we ask that you use IPv6 to connect to your instance in order to help us conserve IPv4 addresses.
Why IPv6?
IPv4 addresses are limited to 4.3 billion addresses and the world is quickly approaching the limit and obtaining new ones will become impossible. IPv6 uses 128-bit addresses instead of IPv4’s 32-bit addresses, removing this limit and providing better security features over IPv4. IPv6 is not a new technology as it has been available for over a decade, though it has been slow to implement due to legacy concerns across multiple industries.
If you’re more curious about IPv6 itself we recommend reading the Wikipedia article on IPv6.
IPv6 Considerations
One thing to note about using IPv6 addresses is that some tools require a different format when attempting to connect directly via the IP address. In general we recommend to use our helper DNS record or use a DNS record in place of the IPv6 address.
Please note that of the most common utilities on macOS and Linux to copy files to and from instances has a different syntax to use raw IPv6 addresses instead of IPv4 addresses. You will need to include and escape square brackets around the IPv6 address.
scp myfile ubuntu@\[2001:db8:0:1\]:myfile
Public IPv4 addressing
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Rapid Access Cloud accounts are able to also have public IPv4 addresses allocated to them, however due to demand the default quota is 0. This is referred to as a floating-ip in OpenStack and can be associated with only one instance at a time.
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