[  489.235802] netdevsim netdevsim641 eni641np1: renamed from eth1
[  489.336385] netdevsim netdevsim334 eni334np1: renamed from eth0
[  489.713966] Could not find device with ifindex 2000 in netnsfd 11
[  489.714114] Could not find netns with fd: 2000
[  489.714194] Cannot link a netdevsim to itself
[  489.714292] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).