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Cisco Bug: CSCur26215 - Kerberos Realm Name (option 6) uses wrong encoding

Last Modified

Sep 11, 2019

Products (1)

  • Cisco Network Registrar

Known Affected Releases

8.1(3.1) 8.2

Description (partial)

The Kerberos Realm Name option data (option 122.6 for DHCPv4 and CableLabs Vendor Option (17) (enterprise-id 4491) option 2171, suboption 6) is not accepted by packet cable devices.

This is because these are incorrectly defined as AT_NSTRING (non-null terminated string) instead of AT_DNSNAME.

Impacts PacketCable for CPNR versions - for DHCPv4 and 8.2 - for DHCPv6. And, and for both DHCPv4 and DHCPv6.

Note: If PCP (BAC) supplies this option data, the correct data will be sent out but may not be shown correctly if detailed packet logging (packet dump) is enabled.
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