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Re: Get the external IP address from a Linux box




On 2018-05-26, Pascal Hambourg <pascal@xxxxxxxxxxxxxxx> wrote:
> Le 25/05/2018 à 02:17, Alan Greenberger a écrit :
>> On 2018-05-24, André Rodier <andre@xxxxxxxxx> wrote:
>>>
>>> I am looking for a native package on Debian, that can give me the
>>> external IP address of the machine.
>> 
>> Assuming you are looking for the public internet address of your router,
>> you could try:
>> /usr/sbin/arp -n
>> and it may show up on a line with the HWadress of your router.
>
> Nope. That would just show the internal address of the router.
>
>
You are mostly correct.  However, I have one machine on which the
response to
/usr/sbin/arp -n
shows two lines with the HWaddress of the router, one with the internal
address as you said and the other with the external address.  I have no
idea what made arp see the external address.