import ipaddress

def zone_is_subset(re2o_reverse_zone, network):
    """Check if all the subnets are inside another network

    Examples
    --------
    An Example to check if the function works as intended

    >>> net1 = ipaddress.IPv4Network("10.11.0.0/16")
    >>> cidrs = ['10.11.1.0/24', '10.11.2.0/23', '10.11.4.0/22']
    >>> zone = {'cidrs': cidrs}
    >>> zone_is_subset(zone, net1)
    True
    """
    
    if network.version == 4:
        return all(ipaddress.ip_network(n).subnet_of(network) for n in
                re2o_reverse_zone["cidrs"])
    
    elif network.version == 6:
        if re2o_reverse_zone["prefix_v6"]:
            ipv6_prefix = re2o_reverse_zone["prefix_v6"] 
            ipv6_prefix_length = re2o_reverse_zone["prefix_v6_length"]
            net6 = ipaddress.ip_network(f"{ipv6_prefix}/{ipv6_prefix_length}")
            return net6.subnet_of(network)
        else:
            return False