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--- a/sys/dev/netif/sn/if_sn.c +++ b/sys/dev/netif/sn/if_sn.c @@ -161,7 +161,10 @@ sn_attach(device_t dev) int j; int error; - sn_activate(dev); + error = sn_activate(dev); + if (error) + return (error); snstop(sc);