Re: [PATCH 10/17] Tools: hv: Gather ipv[4,6] gateway information

Stephen Hemminger
2012-07-24T16:57:29Z

On Tue, 24 Jul 2012 18:53:59 +0200
Olaf Hering <olaf@aepfle.de> wrote:

> On Tue, Jul 24, Stephen Hemminger wrote:
>
> > On Tue, 24 Jul 2012 09:01:34 -0700
> > "K. Y. Srinivasan" <kys@microsoft.com> wrote:
> >
> > > + memset(cmd, 0, sizeof(cmd));
> > > + strcat(cmd, "/sbin/ip -f inet route | grep -w ");
> > > + strcat(cmd, if_name);
> > > + strcat(cmd, " | awk '/default/ {print $3 }'");
> >
> >
> > Much simpler method:
> >
> > ip route show match 0/0
>
> This also has the benefit that ip is not called with absolute path, now
> that distros move binaries around.
>
> Olaf

It is also not hard to do the same thing with a little function
using libmnl