Re: [GTALUG] 2 networks under ip (iproute2)

On 27 February 2015 at 19:01, James Knott <james.knott@rogers.com> wrote:

Try it. I have, with ping, browsers and ssh. They all require the interface to be specified.

But it's only a requirement because that's the way those programs were written. I could write a new version of ping6, or any other program, that first checked if there was only one interface and, if so, didn't require the user to specify it. I could also write a ping6 version that tried each interface until it got a response. So, like I said it's a convention, not a requirement. BTW, the %<interface> format is a standard and can also be used with ping6 instead of -I. -- Scott