Abdullah Ramazanoğlu wrote: > On Thu, 24 May 2018 07:22:56 +0100 André Rodier said: > >> I am looking for a native package on Debian, that can give me the >> external IP address of the machine. >> >> So far, I used internet sites, but I am sure there is a package that do >> that properly, especially if one site is unreachable. >> >> Something I can run from the command line, and that would return the >> external IP address. > > Unless you have a dedicated IP address, then even if you directly > connect to your ISP (no routers, no NAT) you will likely get a local > pool address and from there routed to the internet by your ISP. In > that case your link will have 2 *local* addresses (e.g. 192.168.. or > 10...) : one for your side, one for ISP side. You first enter ISP's > local IP pool, and from there exit to the internet over a real address > from ISP's address block. >
Ew, CGNAT. :( If you have a particularly poor ISP, they may even NAT you somewhere insane outside of RFC1918 (10.0.0.0 - 10.255.255.255 / 172.16.0.0 - 172.31.255.255 / 192.168.0.0 - 192.168.255.255) or RFC6598 (100.64.0.0 - 100.127.255.255) space. I've seen some of these jokers use space in some of the "old /8" space - stuff owned by the likes of the US DOD, AT&T, HP, etc. who got in back in the early days. So even if it looks like you have a "public" IP address on your router, it's always a good idea to verify from the outside. -- |_|O|_| Registered Linux user #585947 |_|_|O| Github: https://github.com/dpurgert |O|O|O| PGP: 05CA 9A50 3F2E 1335 4DC5 4AEE 8E11 DDF3 1279 A281
