[Bug 208001] After turning off the jail does not remove network routes

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208001

Jamie Gritton <jamie at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jamie at FreeBSD.org
             Status|New                         |Closed
         Resolution|---                         |Works As Intended

--- Comment #3 from Jamie Gritton <jamie at FreeBSD.org> ---
I suspect the problem lies in the "/24" of "re0|10.0.0.22/24".  Jail aliases
are almost always going to use the /32 netmask, which is the default if one
isn't specified.  From what I see of your netstat output, your primary address
is on the 10.0.0.0/24 subnet.  The only time you'd want a non-/32 subnet on a
jail is if your set aside a separate subnet used only for that jail.

Note this instruction from the "alias" section of ifconfig(8):
"If the address is on the same subnet as the first network address for this
interface, a non-conflicting netmask must be given.  Usually 0xffffffff is most
appropriate."

In any case, I was unable to reproduce this behavior.  I don't know all the
parameters of your setup, but it looks like you should just remove those
netmasks.

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