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docs: Document issues when not including subnet mask on VNET jails #852

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Feb 17, 2025
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docs: Document issues when not including subnet mask on VNET jails #852

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4 changes: 4 additions & 0 deletions docs/chapters/networking.rst
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Expand Up @@ -120,6 +120,10 @@ container interfaces as they are started and stopped. These interface names
match the pattern `eXb_bastilleX`. Internally to the containers these
interfaces are presented as `vnet0`.

If you do not specify a subnet mask, you might have issues with jail to jail
networking, especially VLAN to VLAN. We recommend always adding a subnet to
VNET jail IPs when creating them to avoid these issues.

VNET also requires a custom devfs ruleset. Create the file as needed on the
host system:

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