[  523.535954] netdevsim netdevsim646 eni646np1: renamed from eth1
[  523.632639] netdevsim netdevsim296 eni296np1: renamed from eth0
[  523.925226] Could not find device with ifindex 2000 in netnsfd 11
[  523.925409] Could not find netns with fd: 2000
[  523.925486] Cannot link a netdevsim to itself
[  523.925593] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).