ping6 and a do-not-fragment option

[Doug Barton]

Richard A Steenbergen wrote:
> Hi,
> 
> I just noticed, while trying to do a little debugging, that ping6
> doesn't seem to have a way to specify "do not fragment" like ping does
> for IPv4. Obviously the way this is implemented has been changed, since
> there is no longer a DF-bit in IPv6, but it looks like there is already
> an IPV6_DONTFRAG setsockopt() available for exactly this purpose. It 
> looks like IPV6_DONTFRAG got added at a later date (from RFC3542), 
> perhaps after ping6 was initially written.
> 
> It seems like the correct fix would be to add a cli option to ping6
> (perhaps 'D', since it's available and matches the command in ping) to
> call this setsockopt() and implement a "do not fragment" option.
> 

Sounds good, we look forward to reviewing your patches. :)


Doug

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