libnetwork-ipv4addr-perl 0.10.ds-4 (riscv64 binary) in ubuntu oracular

 Net::IPv4Addr provides functions for parsing IPv4 addresses both
 in traditional address/netmask format and in the new CIDR format.
 There are also methods for calculating the network and broadcast
 address and also to see check if a given address is in a specific
 network.