Enabling IPv6 for SC4SNMP¶

Older versions of Docker do not support IPv6 or have known issues with IPv6 configuration, so use the latest versions of Docker and Docker Compose, with Docker Compose 2.23.1 or later required for SC4SNMP.

Docker Compose uses IPv6_ENABLED to enable IPv6 for the SC4SNMP network, polling, traps, MongoDB, and the MIB server. The default value is false.

Configure IPv6¶

1. Set IPv6_ENABLED=true in the .env file:

   text IPv6_ENABLED=true

2. COREDNS_ADDRESS_IPv6 must be a unique address inside IPAM_SUBNET_IPv6 and must not match the gateway.

   If the value is empty or outside the configured subnet, Docker can fail with an error such as no configured subnet contains IP address fd02::....

   With the default subnet fd02::/64 and gateway fd02::1, use an available address from that subnet, for example:

   text COREDNS_ADDRESS_IPv6=fd02::53

3. The default IPv6 subnet and gateway are configured in the Network configuration section of docker_compose/.env:

   text IPAM_SUBNET_IPv6=fd02::/64 IPAM_GATEWAY_IPv6=fd02::1

   You can change these values for your environment. If you use a different subnet or gateway, select a unique COREDNS_ADDRESS_IPv6 from that subnet that is not the gateway.

4. If you configure more than one IPv4 or IPv6 subnet in IPAM, update the networks section of docker-compose.yaml accordingly.

For more information about IPv6 networking in Docker, see the Docker documentation.