[ 1417.203696][T12527] netdevsim netdevsim461 eni461np1: renamed from eth0
[ 1417.305278][T12528] netdevsim netdevsim621 eni621np1: renamed from eth1
[ 1420.996969][T12521] Could not find device with ifindex 2000 in netnsfd 11
[ 1420.997706][T12521] Could not find netns with fd: 2000
[ 1420.998323][T12521] Cannot link a netdevsim to itself
[ 1420.999044][T12521] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).