[   77.475501] unregister_netdevice: waiting for ktst-veth to become free. Usage count = 18
[   77.475570] unregister_netdevice: waiting for lo to become free. Usage count = 6
[   77.475621] unregister_netdevice: waiting for ktst-veth to become free. Usage count = 16
[   77.475668] unregister_netdevice: waiting for lo to become free. Usage count = 4
[   78.378497] net_ratelimit: 43 callbacks suppressed
[   78.378606] TCP: AO hash mismatch for [2001:db8:1::1].42908->[2001:db8:254::1].7011 [P.]L3index: 0
[   78.378672] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].42908 [P.]L3index: 0
[   78.522493] TCP: AO hash mismatch for 10.0.1.1.56458->10.0.254.1.7013 [FP.] L3index: 0
[   78.522503] TCP: AO hash mismatch for 10.0.1.1.56458->10.0.254.1.7013 [.] L3index: 0
[   78.561153] TCP: AO hash mismatch for [2001:db8:1::1].42908->[2001:db8:254::1].7011 [F.]L3index: 0
[   78.563507] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].42908 [F.]L3index: 0
[   78.564841] TCP: AO hash mismatch for [2001:db8:1::1].44342->[2001:db8:254::1].7012 [P.]L3index: 0
[   78.770500] TCP: AO hash mismatch for [2001:db8:254::1].7012->[2001:db8:1::1].44342 [P.]L3index: 0
[   78.770501] TCP: AO hash mismatch for [2001:db8:1::1].44342->[2001:db8:254::1].7012 [P.]L3index: 0
[   78.978511] TCP: AO hash mismatch for [2001:db8:1::1].44342->[2001:db8:254::1].7012 [P.]L3index: 0