patch - ping select interface.

[Bob Keyes]

On Fri, 19 Oct 2007, Ralf Friedl wrote:

> Bob Keyes wrote:
>> I originally made this for my own needs, contributed it to openwrt but 
>> think it should go upstream to busybox. I am new here, not sure of the 
>> regular way I am supposed to make contributions, but whoever is in charge 
>> of accepting patches please take a look at 
>> https://dev.openwrt.org/ticket/2522 which will explain the rational for the 
>> feature and includes the patch for it.
>> 
>> Regards,
>> Bob Keyes
> Can you explain how this is different from option -I ? From the man page of 
> the linux ping:
> -I interface address
> Set source address to specified interface address. Argument may be numeric IP 
> address  or  name  of  device.
> When pinging IPv6 link-local address this option is required.
>
> It seems the -I is supposed to accept either an IP address or a device name. 
> I suggest to keep it compatible.

in Linux (net-tools) ping this is what -I does. But not in busybox ping. 
-I is used for another option in busybox ping.