[  522.116530] netdevsim netdevsim644 eni644np1: renamed from eth1
[  522.214499] netdevsim netdevsim281 eni281np1: renamed from eth0
[  522.450257] Could not find device with ifindex 2000 in netnsfd 11
[  522.450514] Could not find netns with fd: 2000
[  522.450649] Cannot link a netdevsim to itself
[  522.450803] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).