what do jails map 127.0.0.1 to?

Allan Jude allanjude at freebsd.org
Tue Feb 12 18:21:21 UTC 2019


On 2019-02-10 19:50, Rick Macklem wrote:
> I am finally back to looking at an old PR#205193.
> 
> The problem is that the nfsuserd daemon expects upcalls from the kernel
> that are from localhost (127.0.0.1) and when jails are running on the system,
> 127.0.0.1 is mapped to some other IP#. (I think it might be the address of the
> first net interface on the machine, but I'm not sure?)
> 
> Is there a way that nfsuserd.c can find out what this IP# is?
> (I have a patch that converts nfsuserd.c to using an AF_LOCAL socket, but that
>  breaks for some setups. I think it was when the directory the socket was being
>  created in is NFSv4 mounted, but I can't remember exactly how it fails.)
> 
> Thanks for any help with this, rick
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normal Jails map 127.0.0.1 to the first IP in the jail.

-- 
Allan Jude

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