[  494.885882] netdevsim netdevsim753 eni753np1: renamed from eth1
[  494.982540] netdevsim netdevsim321 eni321np1: renamed from eth0
[  495.193151] Could not find device with ifindex 2000 in netnsfd 11
[  495.193470] Could not find netns with fd: 2000
[  495.193570] Cannot link a netdevsim to itself
[  495.193683] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).