[  488.858354] netdevsim netdevsim455 eni455np1: renamed from eth0
[  488.955559] netdevsim netdevsim654 eni654np1: renamed from eth1
[  489.176388] Could not find device with ifindex 2000 in netnsfd 11
[  489.176675] Could not find netns with fd: 2000
[  489.176772] Cannot link a netdevsim to itself
[  489.176890] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).