в chroot нет сети

...
Copy DNS Info

One thing still remains to be done before we enter the new environment and that is copying over the DNS information in /etc/resolv.conf. You need to do this to ensure that networking still works even after entering the new environment. /etc/resolv.conf contains the nameservers for your network.

Code Listing 1.3: Copy over DNS information

(The "-L" option is needed to make sure we don't copy a symbolic link)

# cp -L /etc/resolv.conf /mnt/gentoo/etc/

Mounting the /proc and /dev Filesystems

Mount the /proc filesystem on /mnt/gentoo/proc to allow the installation to use the kernel-provided information within the chrooted environment, and then mount-bind the /dev filesystem.

Code Listing 1.4: Mounting /proc and /dev

# mount -t proc none /mnt/gentoo/proc
# mount -o bind /dev /mnt/gentoo/dev

Entering the new Environment

Now that all partitions are initialized and the base environment installed, it is time to enter our new installation environment by chrooting into it. This means that we change from the current installation environment (Installation CD or other installation medium) to your installation system (namely the initialized partitions).

This chrooting is done in three steps. First we will change the root from / (on the installation medium) to /mnt/gentoo (on your partitions) using chroot. Then we will create a new environment using env-update, which essentially creates environment variables. Finally, we load those variables into memory using source.

Code Listing 1.5: Chrooting into the new environment

# chroot /mnt/gentoo /bin/bash
# env-update
>> Regenerating /etc/ld.so.cache...
# source /etc/profile
# export PS1="(chroot) $PS1"

Congratulations! You are now inside your own Gentoo Linux environment. Of course it is far from finished, which is why the installation still has some sections left :-)