Hey guys I have a strange problem. There isn't an eth0 interface on my Linux embedded (ttylinux v7) client instead I have a dummy0 interface.

With this interface I can't ping anything, and I think it does not work at all.

If I run udhcpc to retrieve an IP during the boot process I can't get one (Sending discover.. No lease, failing). If I do the same after the login it works but the dummy0 continues there. That is strange because its a PXE boot so my dhcp server is running since the boot begins.

I've already put the NOZEROCONF option on /etc/network.conf.

  • rmmod dummy will probably get rid of it. But it's not the cause of you not having a working Ethernet interface.
    – derobert
    Jun 10, 2013 at 21:05

2 Answers 2


The command ip link delete dummy0 is what you would use to delete it at the command line. I have no idea why a dummy interface is getting created on your system though.


rmmod dummy will remove the dummy module used to create the dummy interface. You will always get dummy0 interface when the module is loaded.

  • 1
    Can't remove it under Debian 10 because... rmmod: ERROR: Module dummy is builtin.
    – TCB13
    Jan 6, 2020 at 0:19

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