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rustipip-address

How to convert an IP to a u32 and back?

I am wondering how to convert an IPv4 address from and to u32:

use std::net::Ipv4Addr;
let addr = Ipv4Addr::new(127, 0, 0, 1);
...
Solution

  • There are conversion implementations available, From<Ipv4Addr> for u32 and From<u32> for Ipv4Addr, so you can use .into() or T::from() to swap between them.

    let addr = Ipv4Addr::new(127, 0, 0, 1);
let addr_u32: u32 = addr.into();
let addr = Ipv4Addr::from(addr_u32);