[  522.259508] netdevsim netdevsim552 eni552np1: renamed from eth1
[  522.357164] netdevsim netdevsim340 eni340np1: renamed from eth0
[  522.562192] Could not find device with ifindex 2000 in netnsfd 11
[  522.562373] Could not find netns with fd: 2000
[  522.562461] Cannot link a netdevsim to itself
[  522.562578] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).