Function index_to_name 

pub fn index_to_name<Fd: AsFd>(fd: Fd, index: u32) -> Result<String>

ioctl(fd, SIOCGIFNAME, ifreq)—Returns the interface name for a given index.

See the module-level documentation for information about fd usage.

See also index_to_name_inlined which does not require alloc feature.

References

• Linux