[  471.764482] netdevsim netdevsim480 eni480np1: renamed from eth0
[  471.765036] netdevsim netdevsim521 eni521np1: renamed from eth1
[  471.842879] Could not find device with ifindex 2000 in netnsfd 11
[  471.843001] Could not find netns with fd: 2000
[  471.843089] Cannot link a netdevsim to itself
[  471.843193] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).