route labels bgpd can attach labels to routes done using the filter language allow from $neighbor AS 6762 set rtlabel TELEKOM_ITALIA labels are stored in the kernel routing table well, not directly, to save memory, but who cares for implimentation details anyway $ route -n get 10.0.0.1 route to: 10.0.0.1 destination: 10.0.0.1 gateway: 127.0.0.1 interface: lo0 if address: 127.0.0.1 flags: label: foo sockaddrs: