[  490.908579] netdevsim netdevsim501 eni501np1: renamed from eth0
[  491.006417] netdevsim netdevsim665 eni665np1: renamed from eth1
[  491.224820] Could not find device with ifindex 2000 in netnsfd 11
[  491.225039] Could not find netns with fd: 2000
[  491.225116] Cannot link a netdevsim to itself
[  491.225203] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).