lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Wed, 21 Nov 2007 19:17:40 -0500
From:	Jeff Garzik <>
To:	YOSHIFUJI Hideaki / 吉藤英明 
	Herbert Xu <>,
	David Miller <>
Subject: Re: [RFC/PATCH] SO_NO_CHECK for IPv6

YOSHIFUJI Hideaki / 吉藤英明 wrote:
> In article <> (at Wed, 21 Nov 2007 07:45:32 -0500), Jeff Garzik <> says:
>> SO_NO_CHECK support for IPv6 appeared to be missing. This is presented,
>> based on a reading of net/ipv4/udp.c.
> Disagree. UDP checksum is mandatory in IPv6.

Ah, you mean that I need to turn off UDP checksum on receive end as well 
in IPv6...  true.

For those interested, I am dealing with a UDP app that already does very 
strong checksumming and encryption, so additional software checksumming 
at the lower layers is quite simply a waste of CPU cycles.  Hardware 
checksumming is fine, as long as its "free."


To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists