libcore.io.ErrnoException: isConnected failed: EHOSTUNREACH (No route to host)

[geeksville]

java.net.SocketException: failed to connect to /192.168.1.15 (port 14550) after 90000ms: isConnected failed: EHOSTUNREACH (No route to host)
at libcore.io.IoBridge.isConnected(IoBridge.java:256)
at libcore.io.IoBridge.connectErrno(IoBridge.java:178)
at libcore.io.IoBridge.connect(IoBridge.java:112)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.Socket.startupSocket(Socket.java:578)
at java.net.Socket.tryAllAddresses(Socket.java:130)
at java.net.Socket.<init>(Socket.java:180)
at java.net.Socket.<init>(Socket.java:152)
at com.geeksville.mavlink.MavlinkTCP$.socket$lzycompute$1(MavlinkTCP.scala:18)
at com.geeksville.mavlink.MavlinkTCP$.socket$1(MavlinkTCP.scala:17)
at com.geeksville.mavlink.MavlinkTCP$.in$lzycompute$1(MavlinkTCP.scala:25)
at com.geeksville.mavlink.MavlinkTCP$.com$geeksville$mavlink$MavlinkTCP$$in$1(MavlinkTCP.scala:24)
at com.geeksville.mavlink.MavlinkTCP$$anonfun$connect$2.apply(MavlinkTCP.scala:35)
at com.geeksville.mavlink.MavlinkTCP$$anonfun$connect$2.apply(MavlinkTCP.scala:35)
at com.geeksville.mavlink.MavlinkStream.instream$lzycompute(MavlinkStream.scala:36)
at com.geeksville.mavlink.MavlinkStream.instream(MavlinkStream.scala:36)
at com.geeksville.mavlink.MavlinkStream.com$geeksville$mavlink$MavlinkStream$$rxWorker(MavlinkStream.scala:88)
at com.geeksville.mavlink.MavlinkStream$$anonfun$1.apply(MavlinkStream.scala:44)
at com.geeksville.mavlink.MavlinkStream$$anonfun$1.apply(MavlinkStream.scala:44)
at com.geeksville.util.ThreadTools$$anon$1.run(ThreadTools.scala:11)
at java.lang.Thread.run(Thread.java:838)
Caused by: libcore.io.ErrnoException: isConnected failed: EHOSTUNREACH (No route to host)
at libcore.io.IoBridge.isConnected(IoBridge.java:234)
... 21 more