[Reply to all, not just to me.]
On Fri, 2017-02-17 at 08:42 +0530, Narayanan R S wrote:
> Hello Ben,
>
> I did have the documented ICMP network issues when I used the 4.9 version
> of the backported kernel.
>
> When I reverted back to the 4.8 version (of the backported kernel),
> everything was back to normal.
>
> I am not sure when in the 4.9 series this was fixed but the bug report
> explicitly documents 4.9.5. I am not sure what version the backported
> kernel + patches corresponds to in the official/mainstream 4.9 kernel.
The fix is said to have been applied *before* 4.9 and confirmed as
fixed in version 4.9.5. There have been no fixes to netfilter between
4.9.2 (which I think you're using) and 4.9.5.
So it sounds like you might have found a different bug.
Ben.
--
Ben Hutchings
Any sufficiently advanced bug is indistinguishable from a feature.