RHEL 7.6 HyperV (Azure) guest loses network connectivity at boot or after bring the NIC down and up
Issue
- For a guest running in Hyper-V or an Azure instance, sometimes the
hv_netvsc
NIC does not function at boot or stops functioning after anifdown
andifup
cycle (restart of the network service).
Environment
- Red Hat Enterprise Linux RHEL 7.6
- kernel-3.10.0-957.el7 series
- Microsoft Hyper-V virtualization
- Microsoft Azure Cloud
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