[  524.194110] netdevsim netdevsim663 eni663np1: renamed from eth1
[  524.291393] netdevsim netdevsim450 eni450np1: renamed from eth0
[  524.551850] Could not find device with ifindex 2000 in netnsfd 11
[  524.552092] Could not find netns with fd: 2000
[  524.552198] Cannot link a netdevsim to itself
[  524.552327] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).