On Tue, 24 Jul 2012 18:53:59 +0200
Olaf Hering <olaf@xxxxxxxxx> wrote:
> On Tue, Jul 24, Stephen Hemminger wrote:
>
> > On Tue, 24 Jul 2012 09:01:34 -0700
> > "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx> 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
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