[  522.285306] netdevsim netdevsim640 eni640np1: renamed from eth1
[  522.383575] netdevsim netdevsim325 eni325np1: renamed from eth0
[  522.589119] Could not find device with ifindex 2000 in netnsfd 11
[  522.589293] Could not find netns with fd: 2000
[  522.589372] Cannot link a netdevsim to itself
[  522.589457] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).