RPC request sent to 127.0.0.1 becomes from other IP on machine

[Mark Felder]

On Thu, Dec 10, 2015, at 07:37, Rick Macklem wrote:
> Hi,
> 
> Mark has reported a problem via email where the nfsuserd daemon sees
> requests coming from an IP# assigned to the machine instead of 127.0.0.1.
> Here's a snippet from his message:
>   Ok, I have Plex in a jail and when I scan the remote NFS file share the
>   *local* server's nfsuserd spams the logs.
> Spamming the logs refers to the messages nfsuserd generates when it gets
> a request from an address other than 127.0.0.1.
> 
> I think the best solution is to switch nfsuserd over to using an AF_LOCAL
> socket like the gssd uses, but that will take a little coding and
> probably
> won't be MFCable.
> 
> I've sent him the attached patch to try as a workaround.
> 
> Does anyone happen to know under what circumstances the address 127.0.0.1
> gets replaced?
> 
> And do you know if it will always be replaced with the same
> address?
> (I'm basically wondering if the workaround needs to be a list of IP
> addresses
>  instead of a single address?)
> 
> Thanks in advance for any help with this, rick
> 

I've opened a PR per your request

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205193

-- 
  Mark Felder
  ports-secteam member
  feld at FreeBSD.org