use dedicated interface for wget to download sources

[toralf]

/me wonders how to configure portage so that its fetch command uses eth1 instead of eth0?

[NeddySeagoon]

toralf,

Portage won't care.

It will use the route to your mirror. With a single interface that's easy, its always the default route.
With several interfaces, set your GENTOO_MIRRORS to point to a local mirror and ensure that you have a static route that makes it reachable.
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Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.