Ndppd does not work on x86_64_v2

General Discussion & Chat
1

I tried to use https://epel.repo.almalinux.org/10.1/x86_64_v2/Packages/ndppd-0.2.6-1.el10_1.alma_altarch.x86_64_v2.rpm on AlmaLinux 10.1 x86_64_v2.
The CPU is Core i3-2120.
This ndppd runs with no errors, but do nothing.
Then I rebuilt ndppd-0.2.5-6.el9.src.rpm, the older version from epel9.
This older version functions properly with the same ndppd.conf on the same system.
All other conditions are also same.

2

Hi,
when you say you rebuilt ndppd-0.2.5-6.el9.src.rpm, did you build it with mock for AlmaLinux 10 x86_64_v2, or just with rpmbuild on the running system?
If a mock-built 0.2.5 works but the repo 0.2.6 doesn’t, it may be a packaging issue in the 0.2.6 build.

thanks

3

I rebuilt them on the x86_64_v2 running system.

Rebuilt 0.2.5 –> works well

Rebuilt 0.2.6 –> does not work

Distributed 0.2.6 –> does not work

4

Thanks for the details.

So even a locally rebuilt 0.2.6 shows the same behaviour, while 0.2.5 works with the same config.
That sounds more like a change/regression in ndppd itself than an issue specific to the AlmaLinux x86_64_v2 build.

To narrow it down, could you:

  1. Run 0.2.6 in the foreground with debug enabled and paste the output?
ndppd -d -v -c /etc/ndppd.conf
  1. Share a redacted version of your ndppd.conf.
  2. Describe a bit more concretely what “does not work” means
    (for example: no NDP replies, no routes added, no log messages, etc.).

thanks