IP addresses let machines communicate across a network. DigitalOcean Droplets are assigned IPv4 addresses by default. Enabling IPv6 on a Droplet gives you access to its 16 additional IPv6 addresses.
IPv6 support is available for Droplets at no additional cost.
IPv6 is available for Droplets in every region.
IPv6 is the most recent version of the IP protocol. In addition to improvements on the protocol itself, IPv6's massive increase in available address space makes it less vulnerable to brute force–style security exploits, like ones which scan an entire address space searching for vulnerabilities.
By default, each Droplet with IPv6 enabled is alloted a
/124 subnet, which contains 16 configurable IPv6 addresses. One IPv6 address in this range is configured for the Droplet by default, and you can configure additional IPv6 addresses at any time.
IPv6 support is currently a Droplet-exclusive feature. Load balancers, Floating IPs, and other DigitalOcean products do not currently support IPv6.
To use IPv6, it must be enabled and configured at both ends of a connection: where you're connecting from (like your home or work network) and where you're connecting to (like a Droplet). Not all ISPs offer IPv6 addresses for customers, so you may not be able to connect to an IPv6 address directly from your local machine.
We support a maximum of 16 addresses (a subnet mask of
/124) per Droplet. Additional addresses are not available.
If the name of an IPv6-enabled Droplet is an FQDN, a PTR record is be automatically generated only for the first IPv6 address assigned to the Droplet, not to all 16 addresses available.
You cannot enable IPv6 on Droplets created from custom images.
SMTP traffic over IPv6 is blocked at the network level.