dnsmasq tftp's 'get' function reports "operation not supported"

[antbricks]

Versions

• Pi-hole: v6.0.4
• AdminLTE: v6.0.1
• FTL: v6.0.2

Platform

• OS and version: Debian

• Platform: Raspberry Pi 3b+

Expected behavior

dnsmasq's tftp function can serve a file

Actual behavior / bug

After upgrade, dnsmasq's tftp server reports error on 'get' requests. This worked before the upgrade to 6.0.4, and I used it in some home automation scripts for several years.

kevin@pihole:~ $ atftp localhost
tftp> get entry_file
tftp: error received from server <unsupported request from ::1>
tftp: aborting
tftp>

Steps to reproduce

created /etc/dnsmasq.d/07-tftp.conf with the following contents:
enable-tftp
tftp-root=/srv/tftp
tftp-no-blocksize #(this option made no difference, but I tried it just in case)

in /etc/dnsmasq.conf, uncomment the line:
conf-dir=/etc/dnsmasq.d

run 'sudo service restart pihole-FTL'

execute a tftp transfer of a file ("entry_file" in this example)
(I installed atftp locally to rule out external network variables, but the resulting failure is identical externally)

antbricks@pihole:~ $ atftp localhost
tftp> get entry_file
tftp: error received from server <unsupported request from ::1>
tftp: aborting
tftp>

Debug Token

• URL:

Screenshots

If applicable, add screenshots to help explain your problem.

Additional context

This used to work reliably. I can run pihole -d if that helps, just let me know.

[DL6ER]

Thank you. This is a bug in dnsmasq, introduced in pi-hole/dnsmasq@368ceff. We will contact the dnsmasq maintainers and get this fixed. Could you please try me assumed fix (which is nothing else than reverting what this other "fix" did), restores normal TFTP operation for you?

sudo pihole checkout ftl fix/dnsmasq_tftp

[DL6ER]

I updated the branch to contain the latest proposed fix.

[antbricks]

fix/dnsmasq_tftp_patch restored tftp 'get' functionality, thanks!

[DL6ER]

Just to let you know: We are currently waiting on the dnsmasq codebase to be updated and contain the fix before merging it into FTL.