[  520.951972] netdevsim netdevsim616 eni616np1: renamed from eth1
[  521.050236] netdevsim netdevsim435 eni435np1: renamed from eth0
[  521.272859] Could not find device with ifindex 2000 in netnsfd 11
[  521.273064] Could not find netns with fd: 2000
[  521.273188] Cannot link a netdevsim to itself
[  521.273327] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).