The HyperNews Linux KHG Discussion Pages

Note: Finding net info

Forum: Network Buffers And Memory Management
Re: Question Question on network interfaces (Vijay Gupta)
Keywords: network interface
Date: Thu, 30 May 1996 16:12:51 GMT
From: Alan Cox <>

For general scanning there is both the BSD ioctl (which is a pain as you must guess the largest size), or /proc/net/dev (just cat it). For the state of an interface you use a struct ifreq filled in and do SIOCGIFFLAGS and test IFF_RUNNING and IFF_UP