[Galaxy Tab 8.9 Android Development] L3R0N:
A bit more from my logs re WiFi.

03-27 02:03:23.146 E/Netd (154): netlink response contains error (Invalid argument)
03-27 02:03:23.146 E/Netd (154): failed to add interface wlan0 to netId 101
03-27 02:03:23.147 E/ConnectivityService(1044): Exception adding interface: java.lang.IllegalStateException: command '66 network interface add 101 wlan0' failed with '400 66 addInterfaceToNetwork() failed (Invalid argument)'
03-27 02:03:23.147 E/ConnectivityService(1044): Unexpected mtu value: 0, wlan0
03-27 02:03:23.148 D/ConnectivityService(1044): Adding Route [fe80::/64 -> :: wlan0] to network 101
03-27 02:03:23.148 E/Netd (154): interface wlan0 not assigned to any netId
03-27 02:03:23.149 D/ConnectivityService(1044): Adding Route [192.168.0.0/24 -> 0.0.0.0 wlan0] to network 101
03-27 02:03:23.150 E/Netd (154): interface wlan0 not assigned to any netId
03-27 02:03:23.150 E/ConnectivityService(1044): Exception in addRoute for non-gateway: java.lang.IllegalStateException: command '68 network route add 101 wlan0 192.168.0.0/24' failed with '400 68 addRoute() failed (No such device)'
03-27 02:03:23.151 D/ConnectivityService(1044): Adding Route [0.0.0.0/0 -> 192.168.0.1 wlan0] to network 101
03-27 02:03:23.151 E/Netd (154): interface wlan0 not assigned to any netId
03-27 02:03:23.152 E/ConnectivityService(1044): Exception in addRoute for gateway: java.lang.IllegalStateException: command '69 network route add 101 wlan0 0.0.0.0/0 192.168.0.1' failed with '400 69 addRoute() failed (No such device)'
03-27 02:03:23.152 D/ConnectivityService(1044): Setting Dns servers for network 101 to [/199.127.196.52, /199.127.196.53, /8.8.8.8]
03-27 02:03:23.168 D/ConnectivityService(1044): notifyType IP_CHANGED for NetworkAgentInfo [WIFI () - 101]
03-27 02:03:23.189 D/ConnectivityService(1044): scheduleUnvalidatedPrompt 101
03-27 02:03:23.189 D/ConnectivityService(1044): updateSignalStrengthThresholds: CONNECT, sending [] to NetworkAgentInfo [WIFI () - 101]
03-27 02:03:23.189 D/ConnectivityService(1044): rematch for NetworkAgentInfo [WIFI () - 101]
03-27 02:03:23.189 D/ConnectivityService(1044): accepting network in place of null
03-27 02:03:23.189 D/WifiNetworkAgent(1044): NetworkAgent: Received signal strength thresholds: []
03-27 02:03:23.190 D/WifiNative-HAL(1044): stopRssiMonitoring, cmdId 0
03-27 02:03:23.190 D/ConnectivityService(1044): Switching to new default network: NetworkAgentInfo{ ni{[type: WIFI[], state: CONNECTED/CONNECTED, reason: (unspecified), extra: "GetOffMyWiFi", roaming: false, failover: false, isAvailable: true]} network{101} lp{{InterfaceName: wlan0 LinkAddresses: [fe80::f2e7:7eff:fedf:cb32/64,192.168.0.6/24,] Routes: [fe80::/64 -> :: wlan0,192.168.0.0/24 -> 0.0.0.0 wlan0,0.0.0.0/0 -> 192.168.0.1 wlan0,] DnsAddresses: [199.127.196.52,199.127.196.53,8.8.8.8,] Domains: null MTU: 0 TcpBufferSizes: 524288,1048576,2097152,262144,524288,1048576}} nc{[ Transports: WIFI Capabilities: INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VPN LinkUpBandwidth>=1048576Kbps LinkDnBandwidth>=1048576Kbps SignalStrength: -47]} Score{20} everValidated{false} lastValidated{false} created{true} lingering{false} explicitlySelected{true} acceptUnvalidated{false} everCaptivePortalDetected{false} lastCaptivePortalDetected{false} }
03-27 02:03:23.207 D/NetworkMonitor/NetworkAgentInfo [WIFI () - 101]( 1044): Probably not a portal: exception java.net.UnknownHostException: Unable to resolve host "connectivitycheck.gstatic.com": No address associated with hostname
03-27 02:03:23.275 E/ConnectivityService(1044): Exception in setupDataActivityTracking java.lang.IllegalStateException: command '73 idletimer add wlan0 15 1' failed with '400 73 Failed to add interface'
03-27 02:03:23.278 D/CSLegacyTypeTracker(1044): Sending CONNECTED broadcast for type 1 NetworkAgentInfo [WIFI () - 101] isDefaultNetwork=true
03-27 02:03:23.278 D/ConnectivityService(1044): sendStickyBroadcast: action=android.net.conn.CONNECTIVITY_CHANGE
03-27 02:03:23.281 D/Tethering(1044): MasterInitialState.processMessage what=3
03-27 02:03:23.287 D/ConnectivityService(1044): notifyType PRECHECK for NetworkAgentInfo [WIFI () - 101]
03-27 02:03:23.289 D/ConnectivityService(1044): NetworkAgentInfo [WIFI () - 101] validation failed