Unable to add forward map connection refused
 

Hello,

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 :

Subnet 10.192.31.0 netmask 255.255.255.0 {
option domain-name "Podgorica_Promonte_ZTE";
option routers 10.192.31.1;
option broadcast-address 10.192.31.255;
max-lease-time 7200;
default-lease-time 3600;
pool {
range 10.192.31.2 10.192.31.253;
failover peer "dhcp-failover";
deny dynamic bootp clients;
allow unknown-clients;
}
host ZTE_Herjbjorn {
hardware ethernet 00:19:d2:09:7e:8b ;
fixed-address 10.192.31.254;
}

}
THanks in advance
Aleksandar

Hi, welcome to LQ!

Why on earth would you be offering up DHCP leases on the internet
rather than on a private network?


Cheers,
Tink

Hi Tinkster,

Thanks for your reply.

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.

Thanks,
Aleksandar