No longer works with recent commits to libimobiledevice

[datatags]

Since this commit in libimobiledevice, netmuxd no longer seems to work. See this issue for details on what's happening.

If I understand correctly, it seems that byte 0, previously the length, is now part of the sa_family information. It seems like this small change to devices.rs resolves it for IPv4:

IpAddr::V4(ip_addr) => {
-   data[0] = 10;
-   data[1] = 0x02;
+   data[0] = 0x02;
+   data[1] = 0x00;
    data[2] = 0x00;
    data[3] = 0x00;

I assume a similar change is required for IPv6, but I can't test it at the moment, so hopefully this is helpful to someone who can.