[  523.173740] netdevsim netdevsim749 eni749np1: renamed from eth1
[  523.270237] netdevsim netdevsim283 eni283np1: renamed from eth0
[  523.510397] Could not find device with ifindex 2000 in netnsfd 11
[  523.510636] Could not find netns with fd: 2000
[  523.510763] Cannot link a netdevsim to itself
[  523.510915] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).