This is a heads-up for ones who uses samba from debian bullseye-backports: I just uploaded version 4.17.3+dfsg-1~bpo11+1 to bpo, it should be built and available in the archive today. 4.16 for bullseye-backports will be available in my repository for some time, - if you don't want to upgrade to 4.17 (I don't know why), you can switch to http://www.corpit.ru/mjt/packages/samba/. Overall, 4.17 seem to become quite good, the upgrade is smooth and automatic, everything appears to work fine. Thanks, /mjt