net: option to force the MAC address #195
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matttbe
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We could also not take a prefix, and increment the last octet. It's easier to handle the prefix, but maybe easier for the use with a "full" MAC address? |
matttbe
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I just implemented the second option, it looks easier to use. |
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arighi
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Nov 29, 2024
By default, QEMU sets the first NIC's MAC address to 52:54:00:12:34:56, and increments the last octet for the next ones. When different VMs need to discuss between each others via the same bridge, that can cause conflicts. A new option has been added to set a different MAC address, e.g. --net-mac-address 52:54:00:12:34:56 Which will assign 52:54:00:12:34:56 to the fist NIC, and increment the last octet for the next one, etc. Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>
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Needed to avoid conflicts with multiple VMs running in parallel. It requires a WIP version of virtme-ng [1]. Link: arighi/virtme-ng#195 [1] Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>
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By default, QEMU sets the first NIC's MAC address to
52:54:00:12:34:56, and increments the last octet for the next ones. When different VMs need to discuss between each others via the same bridge, that can cause conflicts.A new option has been added to set a different MAC address, e.g.
Which will assign 52:54:00:12:34:56 to the fist NIC, and increment the last octet for the next one, etc.