[  521.980796] netdevsim netdevsim550 eni550np1: renamed from eth1
[  522.079167] netdevsim netdevsim401 eni401np1: renamed from eth0
[  522.348171] Could not find device with ifindex 2000 in netnsfd 11
[  522.348434] Could not find netns with fd: 2000
[  522.348552] Cannot link a netdevsim to itself
[  522.348693] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).