Steps to reproduce:

1. Restart Agen2 on RHEL8 Client.
2. Tail agent2 log file
3.  
4. ...

Result:
tail -f /var/log/zabbix/zabbix_agent2.log
2025/07/31 16:14:25.769279 using plugin 'ZabbixStats' (built-in) providing following interfaces: exporter, configurator, maximum capacity: 100, active checks on start enabled: false
2025/07/31 16:14:25.769281 lowering the plugin ZabbixSync capacity to hard limit 1 as the configured capacity 100 exceeds limits
2025/07/31 16:14:25.769285 using plugin 'ZabbixSync' (built-in) providing following interfaces: exporter, maximum capacity: 1, active checks on start enabled: false
2025/07/31 16:14:25.769335 Plugin communication protocol version is 6.0.13
2025/07/31 16:14:25.769348 Zabbix Agent2 hostname: [scid002]
2025/07/31 16:14:26.770809 [101] cannot connect to [zbxpusck01:10051]: dial tcp: lookup zbxpusck01 on 192.168.193.10:53: dial udp 192.168.193.10:53: connect: network is unreachable
2025/07/31 16:14:26.770823 [101] active check configuration update from host [scid002] started to fail
2025/07/31 16:16:32.802536 [101] active check configuration update from [zbxpusck01:10051] is working again
2025/07/31 16:16:32.802797 [101] no active checks on server [zbxpusck01:10051]: host [scid002] not found
2025/07/31 16:18:38.801718 [101] no active checks on server [zbxpusck01:10051]: host [scid002] not found
2025/07/31 16:20:44.802976 [101] no active checks on server [zbxpusck01:10051]: host [scid002] not found
^C

Used Telnet to connect to zabbix proxy. 

telnet zbxpusck01 10051
Trying 192.168.221.40...
Connected to zbxpusck01.
Escape character is '^]'.
Connection closed by foreign host.

There was a delay in connecting.  Is there a timeout that I can extend?  I am thinking this is the issue.  The agent is being shown as down.

Thanks,{}

David