frr-rpki-rtrlib 8.4.2-1ubuntu1.4 (s390x binary) in ubuntu lunar

 Adds RPKI support to FRR's bgpd, allowing validation of BGP routes
 against cryptographic information stored in WHOIS databases. This is
 used to prevent hijacking of networks on the wider internet. It is only
 relevant to internet service providers using their own autonomous system
 number.