The ipv6 nd autoconfig managed-address-flag command sets the "managed address configuration" flag (M flag) in the RA message, indicating whether hosts should use stateful autoconfiguration to obtain addresses.
The undo ipv6 nd autoconfig managed-address-flag command clears the "managed address configuration" flag (M flag) set in the RA message.
By default, the "managed address configuration" flag (M flag) is not set in the RA message.
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Usage Scenario
Prerequisites
IPv6 has been enabled on the involved interface using the ipv6 enable command.
Configuration Impact
If the ipv6 nd autoconfig managed-address-flag command is run, hosts can obtain additional configuration information (excluding IPv6 addresses) though the ipv6 nd autoconfig other-flag command is not run. Additional configuration information includes the router lifetime, time period for the neighbor to keep reachable, retransmission interval, and PMTU.
To check whether the attached hosts obtain IPv6 addresses through stateful autoconfiguration or stateless autoconfiguration, run the display ipv6 interface command.Precautions
The interface on a Router cannot use stateful address autoconfiguration and stateless address autoconfiguration simultaneously to obtain IPv6 addresses.