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Date:      Thu, 26 Dec 2019 15:18:32 +0000
From:      bugzilla-noreply@freebsd.org
To:        virtualization@FreeBSD.org
Subject:   [Bug 242894] [bhyve] - issue with TCP/IP stack between 12.0-RELASE (guest) and 12.1-RELEASE (hypervisor)
Message-ID:  <bug-242894-27103@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D242894

            Bug ID: 242894
           Summary: [bhyve] - issue with TCP/IP stack between 12.0-RELASE
                    (guest) and 12.1-RELEASE (hypervisor)
           Product: Base System
           Version: 12.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bhyve
          Assignee: virtualization@FreeBSD.org
          Reporter: arkadiusz.majewski@iptrace.pl

Hello,

I've got an issue with TCP/IP network connection (including ICMP).
I suppose there is something wrong between hypervisor and guest network sta=
ck.

Hypervisor: bhyve on FreeBSD 12.1-RELEASE just upgraded
Guest: FreeBSD 12.0-RELEASE before upgrade

Hypervisor: bridge and tap for guest
Guest: vtnet virtual netowrk card


So, I was trying tu upgrade guest to 12.1-RELEASE. After a few attempts whe=
re I
was losing SSH connection, I saw there is an issue with network connection.
Deep investigation gave me the information, that after some time of network
traffic I was disconnected from network on TCP/IP stack, both bridge, tap a=
nd
vtnet network cards were enabled and active. Then after some minutes traffic
went well.
I was trying to download bigger file from Internet (100 MB), after 5 MB of
downloading I lost network connection.

I have others 12.1-RELEASES and they work. I upgraded them before upgraded
hypervisor. So, when hypervisor was as 12.0-RELEASE I hadn't got an issue.
I tried another guest (12.0-RELEASE) and the problem is the same.

To be more precise about my architecture, between hypervisor and that guest=
 is
another guest called firewall, it means the firewall pass the traffic betwe=
en
Internet and not upgraded guest yet I have an issue. The firewall (guest) is
already upgraded to 12.1-RELEASE. Of course, I upgraded that guest before
upgraded hypervisor.

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