To summarize the long chain of comments.
Important point to note is that when you say static IP, it could mean static IP from clients point of view or static IP from routers point of view. So from clients side, they would be static IP
vs curiously static dynamic IP
.
If you are on a company LAN, it is all the more likely it is the latter, though could be former as well.
If you are interested in only the former (pure client side static IP), you should be able to find it from /etc/network/interfaces
(not sure why you are not able to see), and from network manager GUI in Ubuntu, which is accessed by System Settings -> Network -> click Options button, as shown below:
![this image](../../I/static/images/db49c8a8489803cb6567013132573f8bd7a7632df01009b75ec730a60df0d66c.png)
Atleast in my case static means router gives me a static IP by DHCP, may not be easy to distinguish from dynamic – Karthik T – 2013-01-11T07:32:33.367
But the IP address is 'either' statically allocated, i.e. does not change after logins, or is dynamically allocated, i.e. may change after log-in. This has to be configured somewhere, and therefore some information must be found in some files. But which one, and what contents? – Alex – 2013-01-11T07:40:27.963
in my case, in the router. – Karthik T – 2013-01-11T07:45:52.623
@Karthik: I do not use a router in my case. The machine is connected to the LAN directly (company LAN system). – Alex – 2013-01-11T07:47:27.400
yes, and before you go to internet you will pass a router. Similarly either a DHCP server or the same router might be incharge of granting you your IP via DHCP im guessing. – Karthik T – 2013-01-11T07:55:51.387
The "company LAN system" is the router. – Mr Lister – 2013-01-11T07:56:43.183
1For what its worth, you should be able to see in network manager (or equivalent if they have replaced it) setting whether it is static IP or DHCP – Karthik T – 2013-01-11T07:57:51.873
@Alex pls see http://www.liberiangeek.net/wp-content/uploads/2011/05/1029141aa483_8FD2/natty_windows_static_ip_7_thumb.png, the "Method" field is what i am talking about.
– Karthik T – 2013-01-11T08:06:13.353