[  512.926623] netdevsim netdevsim634 eni634np1: renamed from eth1
[  513.024286] netdevsim netdevsim459 eni459np1: renamed from eth0
[  513.277025] Could not find device with ifindex 2000 in netnsfd 11
[  513.277207] Could not find netns with fd: 2000
[  513.277280] Cannot link a netdevsim to itself
[  513.277379] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).