2nd Node continues to go offline

I just added a second node and migrated some VMs there. It continues to go offline, but accessible via local terminal. Is this a NIC issue?

Apr 12 13:32:09 proxmox2 corosync[951]: [KNET ] link: host: 1 link: 0 is down
Apr 12 13:32:09 proxmox2 corosync[951]: [KNET ] host: host: 1 (passive) best link: 0 (pri: 1)
Apr 12 13:32:09 proxmox2 corosync[951]: [KNET ] host: host: 1 has no active links
Apr 12 13:32:10 proxmox2 kernel: e1000e 0000:00:19.0 enp0s25: Detected Hardware Unit Hang: TDH...

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