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I work with RHEL, and have instaled DHCP server on it.
Sometimes it is happen this bad behaviour:
May 19 10:52:34 alpha dhcpd: DHCPDISCOVER from 00:1f:3c:91:9b:ba (LENOVO-C3236B87) via 10.192.31.0
May 19 10:52:35 alpha dhcpd: DHCPOFFER on 10.192.31.230 to 00:1f:3c:91:9b:ba (LENOVO-C3236B87) via 10.192.31.0
May 19 10:52:35 alpha dhcpd: Unable to add forward map from LENOVO-C3236B87.Podgorica_Promonte_ZTE to 10.192.31.230: connection refused
May 19 10:52:35 alpha dhcpd: DHCPREQUEST for 10.192.31.230 (192.168.229.37) from 00:1f:3c:91:9b:ba (LENOVO-C3236B87) via 10.192.31.0
May 19 10:52:35 alpha dhcpd: DHCPACK on 10.192.31.230 to 00:1f:3c:91:9b:ba (LENOVO-C3236B87) via 10.192.31.0
Could you explain why this happens?
The part of DHCPd.master configuration related to this subnet is :
I didn't get your question well. I don't use public IP addresses for assigning, if you thought so.
As you see from the log, after problematic message, there are two correct messages, and I believe it is OK.
I am just worry if this message can cause some unexpected situation for customer.