[  489.243810] netdevsim netdevsim646 eni646np1: renamed from eth1
[  489.338536] netdevsim netdevsim425 eni425np1: renamed from eth0
[  489.585269] Could not find device with ifindex 2000 in netnsfd 11
[  489.585584] Could not find netns with fd: 2000
[  489.585691] Cannot link a netdevsim to itself
[  489.585811] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).