Re: [PATCH 1/7] lockd: Use AF_INET6 listener only when IPv6 support is built in

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On Fri, Jan 30, 2009 at 05:01:36PM -0500, Chuck Lever wrote:
> On Jan 30, 2009, at Jan 30, 2009, 4:55 PM, J. Bruce Fields wrote:
>> On Fri, Jan 30, 2009 at 04:30:10PM -0500, Chuck Lever wrote:
>>> Also, having a separate IPv6-only listener means that someone can
>>> come along and hijack the IPv4 packets on that port.
>>
>> Starting listeners on both as early as possible reduces but doesn't
>> eliminate the chance of that happening.  Don't we just have to assume
>> users of low port numbers are well-behaved to some degree?
>
> We have one listener now, so it doesn't ever happen.

If you restart nfsd, or if other programs are running during boot, then
it can still happen.  Right?

--b.
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