
If a client connects from an IPv4 address, but the listener listens on an IPv6 address, the client IP will be a IPv6 mapped IPv4 address e.g. ::ffff:127.0.0.1. A grant for an IPv4 address should still match an IPv6 mapped IPv4 address.
If a client connects from an IPv4 address, but the listener listens on an IPv6 address, the client IP will be a IPv6 mapped IPv4 address e.g. ::ffff:127.0.0.1. A grant for an IPv4 address should still match an IPv6 mapped IPv4 address.