tftpd 0.17-23ubuntu1 (riscv64 binary) in ubuntu lunar

 Tftpd is a server which supports the Internet Trivial File Transfer Protocol
 (RFC 783). The TFTP server operates at the port indicated in the `tftp'
 service description; see services(5). The server is normally started by
 inetd(8).
 .
 Warning: Does not support 'tsize', which is required by some tftp clients,
 especially PXE, and various other network boot clients. For those, use atftpd
 or tftpd-hpa.