[  540.610666] netdevsim netdevsim299 eni299np1: renamed from eth0
[  540.712001] netdevsim netdevsim657 eni657np1: renamed from eth1
[  541.046016] Could not find device with ifindex 2000 in netnsfd 11
[  541.046159] Could not find netns with fd: 2000
[  541.046229] Cannot link a netdevsim to itself
[  541.046323] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).