[Bug 212073] Crash and reboot immediately:when running dhclient tap0 after bhyve starts

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212073

            Bug ID: 212073
           Summary: Crash and reboot immediately:when running dhclient
                    tap0 after bhyve starts
           Product: Base System
           Version: 10.2-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: lifeibiren at qq.com
                CC: freebsd-amd64 at FreeBSD.org
                CC: freebsd-amd64 at FreeBSD.org

I am trying to run Arch Linux as a Guest OS on bhyve.
I follow 21.7. FreeBSD as a Host with bhyve of the FreeBSD Handbook,but it
doesn't work.Though succeed in booting the iso of Arch Linux(2016.03) after
modifying the boot parameters,according the configuration files in the iso.
However,the guest can't access the Internet!
I manaully configured the IP of tap0(in the host) and enp0s2(in the guest).
And I can ping the IP of the tap0 and wlan0 of the host in the guest,but the
Internet is still inaccessible.
Later when I run dhclient tap0,the screen shows something like kernel
panic,maybe
call backtrace, and the system reboot immediately.
I tried a lot of times.When the bhyve is running and using a tap,only if you
run dhclient tap,the system will definitely carsh and reboot.

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