[  486.889042] netdevsim netdevsim755 eni755np1: renamed from eth1
[  486.988894] netdevsim netdevsim390 eni390np1: renamed from eth0
[  487.336798] Could not find device with ifindex 2000 in netnsfd 11
[  487.336923] Could not find netns with fd: 2000
[  487.336985] Cannot link a netdevsim to itself
[  487.337087] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).