[MCLAG] ICCP optimizes the way to update linklocal address when stand… #7685
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…by modifies MAC address
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…by modifies MAC address
Signed-off-by: dongjianjun@inspur.com
Why I did it
When the MAC address is modified on standby, the IPv6 linklocal address needs to be changed accordingly. In the previous implementation, the IPv6 linklocal address was updated through the down/up port. The down/up port may cause network vibration and traffic interruption.
How I did it
IPv6 linklocal address is generated according to the MAC address according to a certain algorithm. The new implementation uses the command to delete the original linklocal address according to the old MAC address, and then generates and issues the new linklocal address according to the new MAC address.
How to verify it
Test on the switch.
Which release branch to backport (provide reason below if selected)
Description for the changelog
A picture of a cute animal (not mandatory but encouraged)