Binary package “atftp” in ubuntu jammy

advanced TFTP client

 Interactive client for the Trivial File Transfer Protocol (TFTP). Its
 usage is mainly for testing and debugging the atftp server. A TFTP client
 is usually implemented in UEFI/BIOS and bootstrap programs like pxelinux when
 booting from LAN. The atftp client also supports non-interactive invocation
 for easy use in scripts.