flap ospf after add(delete) port to(from) sharing group

[Anton_Nekhorosh]

I use summit x670 with lacp 20g.
After add(delete) port to(from) sharing group allways ospf flapping between two x670. Why? What to do?

In the same time of L2 the traffic continues to work without stopping, flapping only osfp session.

Please help.

[Anton_Nekhorosh]

Hmm... last recommended for x670 EXOS 15.5.4.2
What to choose from 15.6.x? 😞

[OscarK]

From what I can find 15.6.1 and higher.

[Anton_Nekhorosh]

It would be magnificent if you found the version. Thank you.

[OscarK]

I know when you add a port to an existing LAG the complete LAG is re-initialized, if this is the only port in a vlan that could cause that IP to go down and come back up, maybe this could explain the OSPF flap ?
I know this is fixed in the latest EXOS releases, only cannot find quickly which release contains the fix.