Package: snmptrapd Version: 5.9.3+dfsg-2 I upgraded a system from bullseye to bookworm. It had snmptrapd installed. Before the upgrade, all was OK.
After the upgrade, the snmptrapd service no longer starts. The error message is: couldn't open udp:162 -- errno 13 ("Permission denied") It appears that this is caused by the service being started as user Debian-snmp and thus not being able to open privileged ports. I could work around it by editing the systemd service file to run snmptrapd as User=root but this is likely not what was intended. To cover possible upgrade issues I removed and purged the snmptrapd package and re-installed it, but the new install suffered the same issue.