NDP Table Data Missing (GUI)
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For reasons unexplained the NDP table became populated again. Nothing has changed since yesterday or this morning but the data is back:
Weird but yes, it is intermittent, if you give it long enough.
[edit: Post reboot the NDP Table is empty again.]
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Ok, after a few days of testing it seems the NDP Table only becomes populated after around 24 hours post-boot. This may be linked to previous observations that the idle/offline flags on the Status/DHCPv6 Leases page are invariably incorrect and that MAC and Hostnames are typically missing.
It is like the whole IPV6 stack has a gap between its normal functioning and the GUI monitoring and display pages, as the raw data via the CLI is correct.
[Issue remains present with v23.09.a.20230907.0600 too.]
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I have built ndp with debug symbols for testing. It would be great to get a core dump from this version
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I guess that is on me but I've no real idea how to install this or recover back to normal again.
I've downloaded the file I can see that a couple of move files / mv command's are needed but don't presume I know what I am doing - both pfSense and BSD are new to me. Oh and I only have my in-production Netgate devise to test with (gulp!).
That said, my NDP table has vanished again this evening...
...so perhaps that is a sign I should crack-on with this.
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- Download the
ndp.fullfile from Redmine (this is the ndp binary built without compiler optimizations and with debugging symbols). - Navigate to Diagnostics > Command Prompt and upload
ndp.fullto pfSense, it should reportUploaded file to /tmp/ndp.full. - Still on Diagnostics > Command Prompt, enter
mv /usr/sbin/ndp /usr/sbin/ndp.orig, This just renames your existing ndp binary so that the next step doesn't clobber it. - Now run
mv /tmp/ndp.full /usr/sbin/ndpand thenchmod +x /usr/sbin/ndp. The first command moves the new binary into the well-known location and the second command ticks the execute bit so that it can be, well, executed.
I would go ahead too and purge any existing core files with
rm -f /root/*.core. Once you get an empty NDP Table again, there is a great chance that you've hit the issue and a newndp.corefile will be at/root/ndp.core, download this file and share it with me cmcdonald<at>netgate<dot>comThanks
- Download the
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@cmcdonald
Perfect.
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@RobbieTT Any updates? We are eager to obtain a core dump from anyone who can replicate using the debugging build of ndp binary
Need help fast? https://www.netgate.com/support
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Not yet as this is my only pfSense device so I have to wait until the dark hours of the weekend to attempt it (remote working and all that).
I've kinda got used to having 2 routers when I was running EdgeRouters; it's more difficult to test things with only 1. I'm sure I will get another device at some point.
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@cmcdonald said in NDP Table Data Missing (GUI):
@RobbieTT Any updates? We are eager to obtain a core dump from anyone who can replicate using the debugging build of ndp binary
You should now have 2 emails - first with the core dump as per instructions and the second taken after a system reboot.
Good luck.
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@RobbieTT Thanks for the core. We were able to track this one down!
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@cmcdonald said in NDP Table Data Missing (GUI):
@RobbieTT Thanks for the core. We were able to track this one down!
Glad to help you and the team.
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@RobbieTT Has this happened since the fix?
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@marcosm
No, the NDP table has been fully populated in the GUI since the fix.️
