[ 1287.977990][T11143] netdevsim netdevsim265 eni265np1: renamed from eth0 [ 1288.068700][T11142] netdevsim netdevsim569 eni569np1: renamed from eth1 [ 1291.861891][T11135] Could not find device with ifindex 2000 in netnsfd 11 [ 1291.862722][T11135] Could not find netns with fd: 2000 [ 1291.863636][T11135] Cannot link a netdevsim to itself [ 1291.864869][T11135] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).