Re: Bad performance when using IPv4 and IPv6 together

[Ralf Baechle <ralf@xxxxxxxxxxx>]

On Wed, Aug 15, 2001 at 11:53:38AM -0700, Brad Chapman wrote:

>       Whenever I compile the 2.4.8 kernel's IPv6 stack monolithically, or 
> when I load it as a module, the system's networking speed slows dramatically.
> TCP and UDP connections take an immensely long time, and whenever I attempt to
> ping through my gateway, most of the ICMP packets have huge ms times (10000+)
> or get dropped altogether.
>       Is this a bug? I need to have access to the IPv6 stack so that I
> can test my IPv6 netfilter programming efforts. Is there a way to include
> both stacks and prevent performance degradation?

Have you only tested ICMP using ping?  I was observing odd behaviour of
ping6 also but suspect it's actually ping6.  So for example ping6 behaves
different for me depending if I give it a hostname or an IP address -
even though both refer to the same address of a local interface.

  Ralf