[  516.586228] netdevsim netdevsim615 eni615np1: renamed from eth1
[  516.684251] netdevsim netdevsim396 eni396np1: renamed from eth0
[  516.883937] Could not find device with ifindex 2000 in netnsfd 11
[  516.884075] Could not find netns with fd: 2000
[  516.884158] Cannot link a netdevsim to itself
[  516.884245] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).