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Date:      Thu, 17 Sep 2020 16:03:42 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 249400] The last jail created using VNET has ARP problem
Message-ID:  <bug-249400-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D249400

            Bug ID: 249400
           Summary: The last jail created using VNET has ARP problem
           Product: Base System
           Version: 12.1-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: fred.ha11@yahoo.com

Created attachment 218027
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D218027&action=
=3Dedit
/etc/jails.conf

12.2-BETA has a new issue with VNET that 12.1-RELEASE didn't have.

Initially when a list of jails are created all can be pinged. However, after
the default ARP timeout, the last jail attached to the bridge fails to resp=
ond.
If the ARP for the last jail is statically set (arp -s) it will again respo=
nd
to pings. The problem only effects the last jail attached to the bridge
regardless of the number of jails or which one is last.

My /etc/jails.conf is attached

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