Hi,did a apt source ppp/oldstable and a dpkg-buildpackage (with some adjustments to fix the incompatible pointer type errors) and force installed the package.
it did connect after downgrading the package.Just retried, the change of the pptp-linux to oldstable (or current stable) did not change anything, but downgrading ppp did resolve it.
as I already wrote to Chris (did hit reply instead of replay all, sorry) this is just a test setup of virtual machines where the PPTP is more or less just a connection to a different LAN, the encryption is not relevant.
Regarding debugging, can you help there? The pptp/ppp stuff shows its age and is a little hard to figure out how to properly debug.
can do it in a VM so I can just check out the git repo and do a bisect if that helps. (would need a little help with the build options there though)
regards On 18/03/2026 20:22, Christoph Biedl wrote:
Control: tags 1131156 moreinfo Debian-maintainer of pptp-linux here. Chris Boot wrote...Thanks for reporting the issue. It's not clear from the included information what's happening here, but the issue is more likely than not in the pptp-linux package that provides the PPTP client, so I'm reassigning the bug there.Seems sensible, let's see where this goes.If you can obtain more logging or output from pppd and/or pptp then I'm sure this would be most helpful.Indeed. Additionally, in the original bug report you wrote: | Downgrading to the version in oldstable (...) does resolve the issue. Can you describe this downgrade, or re-check? Did you downgrade pptp-linux as well, so from 1.10.0-2 to 1.10.0-1? Otherwise, as I do not have a MS server 2019 available, testing will be a bit difficult. Are you capable of building Debian packages locally? Then disabling the patches introduced in version -2 was the next thing to try. Of those, only | cherry-pick/1599550704.1.10.0-7-g194620e.feature-terminate-from.patch would have the potential to actually harm the connection. So this all is a bit weird.In the mean time I would urge you to consider a different VPN protocol (...)Indeed. Christoph
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