[  522.038763] netdevsim netdevsim691 eni691np1: renamed from eth1
[  522.135358] netdevsim netdevsim305 eni305np1: renamed from eth0
[  522.364012] Could not find device with ifindex 2000 in netnsfd 11
[  522.364238] Could not find netns with fd: 2000
[  522.364337] Cannot link a netdevsim to itself
[  522.364464] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).