PF_SCL_INET6_PREFIX
{ .type = PF_SCL_INET6_PREFIX, .off = _OUT(inet6_prefix), .cb = snl_attr_get_uint32 },
snl_add_msg_attr_u32(&nw, PF_SCL_INET6_PREFIX, lim->inet6_prefix);
{ .type = PF_SCL_INET6_PREFIX, .off = _OUT(inet6_prefix), .cb = nlattr_get_uint32 },
nlattr_add_u32(nw, PF_SCL_INET6_PREFIX, attrs.inet6_prefix);