[  488.544468] netdevsim netdevsim550 eni550np1: renamed from eth1
[  488.642199] netdevsim netdevsim273 eni273np1: renamed from eth0
[  488.861025] Could not find device with ifindex 2000 in netnsfd 11
[  488.861237] Could not find netns with fd: 2000
[  488.861327] Cannot link a netdevsim to itself
[  488.861425] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).