Re: checking running kernel version for IP_PKTINFO support

[Alan Cox]

> I'm running a mix of 2.2.x and 2.0.x kernels.  My program needs
> to run on both of them only one really supports the IP_PKTINFO
> socket option.  Right now I'm just using <linux/version.h>

One way is to issue the ioctl and see if it fails. Another is to use
the data uname does (man 2 uname)

Alan

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