On 2011-05-03 16:12:53 -0000, Olivier Mengué <475...@bugs.launchpad.net>
wrote in <20110503161253.22907.24156.mal...@wampee.canonical.com>:
> @dl9sau: if NAT is enough for you, don't use "-net tap": "-net user" is
> much simpler to setup.
This is no option.
It's generally not a good idea to force a user's network interface to
become reconfigured. There are various reasons, like:
- security: his firewall filter rules may not apply anymore, the system is
open to the world
- what makes you think that the guess ("use the iface with the default route
as bridge") is always right? There may be more other scenarios where the
services the qemu instances provide should be offered to the local network, not
to the internet..
- problems if your computer is a WLAN STA (client) -- managed mode and
bridging are mutaly exclusive
- your script only works in the special case that the interface with the
default route is already part of a bride. only then you could apply a brctl
addif .. This is no normal setup.
The up/down script is mess and should be removed.
Kind regards,
- Thomas Osterried
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https://bugs.launchpad.net/bugs/475327
Title:
qemu -net nic -net tap does not start due to qemu-ifXXX scripts
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