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More info about VLAN config

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thenktor
2025-05-28 09:15:11 +02:00
parent 9911f75346
commit e28fef8396
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17
docs/chapters/networking.rst
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@@ -311,18 +311,23 @@ VLAN Configuration
Bastille supports VLANs to some extent when creating jails. When creating a jail, use
the ``--vlan ID`` options to specify a VLAN ID for your jail. This will set the proper
variables inside the jails `rc.conf` to add the jail to the specified VLAN.
variables inside the jails `rc.conf` to add the jail to the specified VLAN. Using this method
the bridge for the jail must carry tagged VLAN packets, e.g. you can bridge a VLAN trunk to
the jail and in the jail you then can access all VLANs. But be careful: This may have
security implications.
You cannot use the ``-V`` options with interfaces that have dots (.) in the name, which is the
You cannot use the ``-V``/``--vnet`` options with interfaces that have dots (.) in the name, which is the
standard way of naming a VLAN interface. This is due to the limitations
of the JIB script that Bastille uses to manage VNET jails.
You can however use ``-B`` with VLAN interfaces (even with dots in the name). Below
is an ``rc.conf`` snippet that was provided by a user who has such a configuration.
You can however use ``-B``/``--bridge`` with VLAN interfaces (even with dots in the name).
Using this method you create bridge interfaces in ``rc.conf`` and only add VLANs, that are needed
for the jail. The jail only has access to this VLAN then and not to the whole trunk.
Below is an ``rc.conf`` snippet that was provided by a user who has such a configuration.
.. code-block:: shell
# rename ethernet interfaces
# rename ethernet interfaces (optional)
ifconfig_igb1_name="eth1"
ifconfig_eth1_descr="vm/jail ethernet interface"
@@ -344,7 +349,7 @@ is an ``rc.conf`` snippet that was provided by a user who has such a configurati
ifconfig_eth1_20="up"
ifconfig_eth1_30="up"
Notice that the interfaces are bridge interfaces, and can be used with ``-B``
Notice that the interfaces are bridge interfaces, and can be used with ``-B``/``--bridge``
without issue.
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