UDP (User Datagram Protocol) is a transport-layer protocol used for sending data over IP networks. It is a connectionless protocol, which means that there is no guarantee of delivery, and packets may be lost or corrupted during transmission.
sudo systemctl stop zabbix-server zabbix-agent sudo rm -rf /tmp/zabbix_* # remove stale IPC artifacts (safe) sudo systemctl start zabbix-server zabbix-agent zabbix cannot write to ipc socket broken pipe upd