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CONTAP-673047: Node disruption may occur with NFSv4.x session trunking during mixed-version upgrade to 9.18.1x when LIF add/migrate operations are performed

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nas
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Issue

A defect can occur when NFSv4.x session trunking is enabled in a mixed-version cluster during an upgrade from a release prior to 9.18.1x to 9.18.1x. If LIF add or LIF migrate operations are performed while some nodes are on 9.18.1x and others remain on a pre-9.18.1x release, the issue may lead to node disruption and interrupt the upgrade.

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