Bug 214004

Summary:	Hyper-V no buffer space are available
Product:	Base System	Reporter:	Dmitriy <d_petrov>
Component:	kern	Assignee:	Kubilay Kocak <koobs>
Status:	Closed Overcome By Events
Severity:	Affects Only Me	CC:	sepherosa, virtualization
Priority:	---
Version:	10.1-RELEASE
Hardware:	amd64
OS:	Any

Description Dmitriy 2016-11-02 09:39:37 UTC

We have Hyper-V on Windows server 2012 R2, where was deployed several hosts with FreeBSD. That is used as the gateway, VPN server, web server, and other. We don't use the legacy network adapter.
On all machines with a certain periodicity  network interfaces are stopping with error "no buffer space are available".
Helps only ifconfig down/up.

Comment 1 Sepherosa Ziehau 2016-11-04 01:40:06 UTC

The network driver for Hyper-V before 10.3 is buggy, and becomes unstable even under slight load.  Please update to 10.3 or 11.0 if you only want to stick to releases.  Current, 11-stable, and 10-stable are also in good shape for Hyper-V support.

Comment 2 Kubilay Kocak freebsd_committer

2022-01-31 23:25:40 UTC

^Triage: Closing: Issue report for now End-Of-Life FreeBSD version (10.x). If this is still an issue and reproducible on supported FreeBSD versions, please re-open this issue with additional system and configuration details and steps to reproduce.