dns/dhcp problems (or - net.dns1 vs. dhcp.xxx.dns1)

[Metuki Sabhe]

hi,

I use dhcpcd to get DHCP properties on a new interface I created (not
wifi).
DHCP succeeds, and I can see all the dhcp.myinterface0.xxx properties
get set correctly.
But dns still doesn't work, and indeed net.dns1 is still not set by
dhcpcd, only dhcp.xxx.dns1 is set.

I tried to add "setprop net.dns1 xxx" to the file:
to /system/etc/dhcpcd/dhcpcd-hooks/20-dns.conf
but it didn't work, because dhcpcd runs not as root anymore
(can I prevent it from dropping the root credentials btw ? i couldn't
find how).

How should I get net.dns1 to be set too ?
What is the relation between dhcp.xxx.dns1 and net.dns1 ?
Who is setting net.dns1 ?
I guess that the framework is doing that, but should it work
automagically on any interface ?
Anyway I can do that from dhcpcd ?

thanks!!!
sabhe

[Yi Sun]

You need to do this in the status tracker as the wifi does

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[Metuki Sabhe]

Hi Yi Sun,

Can you please elaborate ?

I am adding a new interface which will have a gateway to the internet,
what should I do to make the framework recognize it ?

Can you please point me to a file(s) I should use as a reference ?

Thanks,
Sabhe

[Yi Sun]

Still no 100% sure about your requirement, approach and goal.
Anyway, I assume (please confirm, since I'm wrong in the most of
times) that you are not trying to take a shortcut like (netcfg eth0
dhcp) to make your interface/device to work and what you really want
is something like Wifi or Bluetooth that has a nice setting ui with a
status icon and can work with other interfaces(eg. 3g, airplan mode)
correctly. And you are willing to add new code into the framework for
your interface. For this, you can start at the files in
framework/base/wifi/*.java

Also, in Android-x86, we have implemented Ethernet support, you may
take a look at
http://git.android-x86.org/?p=platform/frameworks/base.git;a=commit;h=73c8442658704e5749c5fc6fd6f93c15fcf1d7c6
http://git.android-x86.org/?p=platform/frameworks/base.git;a=commit;h=ed0db68a4733396c22b4fe88ff72ad0699e0fc49
http://git.android-x86.org/?p=platform/frameworks/base.git;a=commit;h=b3de8efe6b88a345310abb71e890025d50caf86b

[Robert Greenwalt]

Your NetworkStateTracker should set mDnsPropNames to a String[] of the properties you want to hold your dns server names in (sounds like you are using dhcp.myinterface.dns1, dns2,etc).  The ConnectivityManager will read from your list of properties and copy them to net.dns1, dns2, etc when your network is alive.

R

On Sat, Jan 23, 2010 at 7:59 AM, Metuki Sabhe <sabhe....@gmail.com> wrote: