Date: Thu, 10 Dec 2009 13:03:05 -0600 From: Richard A Steenbergen <ras@e-gerbil.net> To: freebsd-net@FreeBSD.org Subject: ping6 and a do-not-fragment option Message-ID: <20091210190305.GT45152@gerbil.cluepon.net>
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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. -- Richard A Steenbergen <ras@e-gerbil.net> http://www.e-gerbil.net/ras GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)
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