When sending a 0 bytes UDP packet to nbt task in Samba AD, the process will loop infinitely causing a huge consumption of CPU.
The nbt service is not denied, it's still processing events.
Created attachment 9231 [details]
The attached patch was tested successfully on a build from master branch.
Re-assigning to Karolin for inclusion in 4.1.0 and 4.0.next.
Pushed to autobuild-v4-1-test and autobuild-v4-0-test.
Pushed to v4-1-test and v4-0-test.
Closing out bug report.