The current glibtop_get_netload API has many limitation:
- it doesn't provide broadcast address for IPv4 interface
- it supports only 1 IPv4 address per interface
- it supports only 1 IPv6 address per interface


May be it would be nice to split netload into:

- keep netload as is for compatibility, eventually strip it

- provide a new API to retrieve all addresses uses by an interface, possibly returning an array of
  struct {
    type;
    mtu;
    hardware address;
    union address {
      struct IPv4 { address, subnet, broadcast };
      struct IPv6 { address, prefix, scope };
    };
  };


Or it would be also possible to enlarge struct glibtop_netload so that it would include a fixed number of addresses (say 32 ?).