A computer system for facilitating ephemeral entries in a forwarding information base in a Content Centric Network, CCN , the computer system comprising: an intermediate node arranged to propagate an interest comprising a request for data towards a data producer that can provide the requested data; and a content producing device ; wherein the intermediate node is configured to: receive an advertisement from the content producing device for content available from the content producing device, the advertisement including a name for the content and a condition for removing a first entry (130.1) from the forwarding information base , wherein the name is a hierarchically structured variable length identifier that includes contiguous name components ordered from a most general level to a most specific level; in response to receiving the advertisement, obtain the first entry from the forwarding information base of the intermediate node based on the name for the content; add to the first entry the condition included in the advertisement as a lifetime value for the first entry; determine whether the lifetime value is satisfied; and when it is determined that the lifetime value is satisfied, remove the first entry from the forwarding information base, thereby facilitating the intermediate node to efficiently manage the forwarding information base based on information provided by the content producing device. an intermediate node arranged to propagate an interest comprising a request for data towards a data producer that can provide the requested data; and a content producing device ; wherein the intermediate node is configured to: receive an advertisement from the content producing device for content available from the content producing device, the advertisement including a name for the content and a condition for removing a first entry (130.1) from the forwarding information base , wherein the name is a hierarchically structured variable length identifier that includes contiguous name components ordered from a most general level to a most specific level; in response to receiving the advertisement, obtain the first entry from the forwarding information base of the intermediate node based on the name for the content; add to the first entry the condition included in the advertisement as a lifetime value for the first entry; determine whether the lifetime value is satisfied; and when it is determined that the lifetime value is satisfied, remove the first entry from the forwarding information base, thereby facilitating the intermediate node to efficiently manage the forwarding information base based on information provided by the content producing device. receive an advertisement from the content producing device for content available from the content producing device, the advertisement including a name for the content and a condition for removing a first entry (130.1) from the forwarding information base , wherein the name is a hierarchically structured variable length identifier that includes contiguous name components ordered from a most general level to a most specific level; in response to receiving the advertisement, obtain the first entry from the forwarding information base of the intermediate node based on the name for the content; add to the first entry the condition included in the advertisement as a lifetime value for the first entry; determine whether the lifetime value is satisfied; and when it is determined that the lifetime value is satisfied, remove the first entry from the forwarding information base, thereby facilitating the intermediate node to efficiently manage the forwarding information base based on information provided by the content producing device. <EOS>