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Cisco Bug: CSCvi04968 - DNS Secondary Server IP overwritten by Primary server IP from the DHCP Server options response

Last Modified

Jun 12, 2018

Products (1)

  • Cisco Industrial Ethernet 1000 Series Switches

Known Affected Releases


Description (partial)

DNS client does not learn secondary server ip, instead updates primary server ip on all fields

Device manager has Option to provide Primary and Secondary Domain server names. 
If the management Vlan is selected as IP address method as DHCP. 
The  DHCP sever is sending both "Primary and Secondary DNS name" in DHCP options, the device learns only Primary DNS name. 
The same name is saved in secondary DNS sever name too. 
This can be observed in ?Express setup page?

DHCP server sending the options to include Domain Name Server.
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