addr.is_ipv4
Available inall subroutines.
Returns true if the address family of the given address is IPv4.
Example
if (addr.is_ipv4(client.ip)) { /* the client connected over IPv4 */}Try it out
addr.is_ipv4 is used in the following code examples. Examples apply VCL to real-world use cases and can be deployed as they are, or adapted for your own service. See the full list of code examples for more inspiration.
Click RUN on a sample below to provision a Fastly service, execute the code on Fastly, and see how the function behaves.
Log the IP version (IPv4/IPv6)
Identify which type of IP address was used by the client connecting to your Fastly service.
