[  541.065410] netdevsim netdevsim556 eni556np1: renamed from eth1
[  541.165744] netdevsim netdevsim375 eni375np1: renamed from eth0
[  541.497570] Could not find device with ifindex 2000 in netnsfd 11
[  541.497747] Could not find netns with fd: 2000
[  541.497837] Cannot link a netdevsim to itself
[  541.497958] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).