Cisco Bug: CSCuj98034 - CLI should NOT allow configuration of IPv6 DHCP server on Loopback
Last Modified
Feb 06, 2017
Products (1)
- Cisco IOS
Known Affected Releases
15.3(2)T1.2
Description (partial)
Symptom: The CLI allows for the DHCPv6 server to be configured on a Loopback interface, but this is NOT a valid configuration. If a DHCPv6 relay relays a DHCPv6 request to this device, using as destination a Loopback address, a message similar to the following will be seen if "debug ipv6 dhcp detail" is enabled on the DHCPv6 server device: IPv6 DHCP: Server/relay not enabled on GigabitEthernet0/0 The "GigabitEthernet0/0" interface will depend on the specific device configuration, and refers to the interface on which the DHCPv6 relay packet arrived Conditions: A DHCPv6 server is configured on a Loopback interface and a DHCPv6 relay is trying to relay a DHCPv6 request using as destination the Loopback interface IPv6 address
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