[  526.506933] netdevsim netdevsim646 eni646np1: renamed from eth1
[  526.604582] netdevsim netdevsim483 eni483np1: renamed from eth0
[  526.832829] Could not find device with ifindex 2000 in netnsfd 11
[  526.833059] Could not find netns with fd: 2000
[  526.833155] Cannot link a netdevsim to itself
[  526.833277] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).