[  522.432301] netdevsim netdevsim257 eni257np1: renamed from eth0
[  522.528649] netdevsim netdevsim534 eni534np1: renamed from eth1
[  522.784651] Could not find device with ifindex 2000 in netnsfd 11
[  522.784879] Could not find netns with fd: 2000
[  522.784970] Cannot link a netdevsim to itself
[  522.785084] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).