[  539.201373] netdevsim netdevsim501 eni501np1: renamed from eth0
[  539.302622] netdevsim netdevsim759 eni759np1: renamed from eth1
[  539.702105] Could not find device with ifindex 2000 in netnsfd 11
[  539.702269] Could not find netns with fd: 2000
[  539.702355] Cannot link a netdevsim to itself
[  539.702472] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).