[Dnsmasq-discuss] FreeBSD TFTP issue (failure to serve via IPv4) reported against 11.3/12.x

Geert Stappers stappers at stappers.nl
Sat Oct 5 08:54:36 BST 2019


On Sat, Oct 05, 2019 at 09:00:25AM +0200, Matthias Andree wrote:
> Greetings,
> 
> I have received a bug report where TFTP regresses on newer FreeBSD
> versions and breaks on 11.3 and 12.0 with IPv4 where older FreeBSD
> releases (that are now weeks before EOL) work,
> with some kind of analysis, here:
> 
> <https://forums.freebsd.org/threads/dnsmasq-tftp-service-not-working-any-longer.72457/#post-440976>
> <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241068>
> 
> Please investigate.
> I don't currently have time to look deeper and/or debug.

Me too.


> It appears that IPv6 works but something about interface enumeration is
> broken with IPv4 and the relevant interface isn't found.
> Might have to do with sizing of structures.
> 
> I can't currently look deeper,
> but should be able to answer questions or try patches tomorrow.

Questions:
Which version of Dnsmasq did work?  ( git bi-sect  known good)
Which version of Dnsmasq doesn't work?  ( git bi-sect  known bad)

In case it is stated in
> <https://forums.freebsd.org/threads/dnsmasq-tftp-service-not-working-any-longer.72457/#post-440976>
> <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241068>
have the curitisy to state it here also ...


> It seems the minimal reproducer forward would be to install FreeBSD 11.3
> in a VM and test locally with a TFTP client pulling from 127.0.0.1 to
> force IPv4 and ::1 to force IPv6.


Groeten
Geert Stappers
-- 
Leven en laten leven



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