[  513.626378] netdevsim netdevsim656 eni656np1: renamed from eth1
[  513.724158] netdevsim netdevsim267 eni267np1: renamed from eth0
[  513.925211] Could not find device with ifindex 2000 in netnsfd 11
[  513.925418] Could not find netns with fd: 2000
[  513.925529] Cannot link a netdevsim to itself
[  513.925666] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).