[LTP] [PATCH 1/1] if-mtu-change.sh: Lower CHANGE_INTERVAL to 1

[Petr Vorel]

> On 14.01.2021 17:47, Petr Vorel wrote:
> > Hi Alexey,

> >> Hi Petr,

> >> Do you mean "sleep $NS_DURATION" in mcast-pktfld02.sh is not needed
> > Yes: sleep $NS_DURATION in mcast-pktfld02.sh and other mcast*.sh tests in:
> > https://urldefense.com/v3/__https://patchwork.ozlabs.org/project/ltp/patch/20201125053459.3314021-2-lkml@jv-coder.de/__;!!GqivPVa7Brio!P0xbdqXlRQX7GPsKJmcPapdEOX5VV4OnkCKv-P9OqIWNcTvY9a9KXhOSjdJ1dKco5YbG$ 
> > https://urldefense.com/v3/__https://patchwork.ozlabs.org/project/ltp/patch/20201125053459.3314021-1-lkml@jv-coder.de/__;!!GqivPVa7Brio!P0xbdqXlRQX7GPsKJmcPapdEOX5VV4OnkCKv-P9OqIWNcTvY9a9KXhOSjdJ1dKjzIVpO$ 


> It's needed because the commands run in parallel in the background
> during $NS_DURATION. Without it, the test terminates them all shortly
> after starting.

Thanks for info. Yes, that's right. I got confused, because on netns it's (at
least on the default setup), that it passes even without sleep.
Maybe we could remove it for netns.

Kind regards,
Petr