[ 1316.419294][T11146] netdevsim netdevsim428 eni428np1: renamed from eth0 [ 1316.521568][T11144] netdevsim netdevsim561 eni561np1: renamed from eth1 [ 1320.184964][T11138] Could not find device with ifindex 2000 in netnsfd 11 [ 1320.186099][T11138] Could not find netns with fd: 2000 [ 1320.186789][T11138] Cannot link a netdevsim to itself [ 1320.187544][T11138] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).