According to the comment in the code:
---
/* Sigh, IP_RECVERR for raw socket
* was broken until 2.4.9. So, we ignore
* the first error and warn on the second.
*/
if (once++ == 1)
fprintf(stderr, "\rWARNING: kernel is not very fresh,
upgrade is recommended.\n");
----
When I first saw the error I wondered how fresh my kernel had
to be to pass iputils' tests, since I'm running on:
Ishtar:packages/build/iputils-s20121221> uname -a
Linux Ishtar 4.1.0-Isht-Van #2 SMP PREEMPT Tue Jun 23 07:52:09 PDT 2015
x86_64 x86_64 x86_64 GNU/Linux
So I looked at code Um... why is iputils thinking
that 4.1.0 < 2.4.9 -- or that 4.1.0 is older than
2.4.9?
I humbly submit that 4.1.0, released in 2015 is
unquestionably 'fresher' than the date on iputils of 2012.
Does this mean the check in iputils is faulty w/r/t new
kernels, or do new kernels have a *SERIOUS* regression?
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