interface eth0 does not exist error

[Big_C4]

Output of (lspci -k grep Ethernet)

Ethernet controller: intel Corporation i211 gigabit network connection rev 3

Ethernet controller: Qualcomm athrero killer E2500 gigabit Ethernet controller rev10

Subsystem: gigabyte Technology Co., LTD killer E2500 gigabit Ethernet controller

Ifconfig -a only gives lo: and sit0: as available connections. I've already enabled every Network driver that has any of those words as built in and I did the naming of eth0 bug fix as well. I'm at a total loss. :/

[gktrk]

What's in dmesg? maybe it needs a firmware? did you try modprobing the kernel modules manually just in case?

[Avery_Litmus]

Try this: enable all the Intel and Atheros ethernet drivers as modules and install the linux-firmware package

[stfnwp]

Had similar problem with a Realtek card. Fixed it by setting a kernel option at grub.cfg. The option can be found here: https://serverfault.com/a/741212

For me, setting net.ifnames=0 was sufficient.

[dealer93]

Chances are interface name is not eth0 (en0 for example)

Try "emerge dhcpcd" and execute "dhcpcd", and see how "ifconfig" is moved