Re: Connectivity for a qemu guest; was Re: Connection of a qemu guest to the 'net.

[Steve Litt]

Berto Furth said on Sun, 21 Mar 2021 08:32:28 +1100

>Hi Steve,
>
>I'll let Peter reply but here's my brief thought.
>
>On Sun, 21 Mar 2021, at 02:57, Steve Litt wrote:
>> peter@easthope.ca said on Fri, 19 Mar 2021 09:33:07 -0700
>> 
>>   
>> >(4) Q: Why does qemu involve a bridge rather than only routing?
>> >
>> >A: My hypothesis.  Routing requires adjustment of iptables. Direct 
>> >editing of iptables is difficult and error prone for non-experts.
>> >An alternative is to use Shorewall or similar functionality.
>> >Shorewall is large package.  Imposing dependance of qemu on
>> >Shorewall will be unwelcome to some users.  A bridge is an
>> >expedient solution.   
>> 
>> I'm unclear as to how "routing" is an alternative to a bridge and
>> vice versa. Would this "routing" take place on the hardware host, or
>> the software guest? Did you by any chance mean NAT instead of
>> "routing"?  
>
>Routing would take place on the host. The host would be reconfigured
>to be a router and the guests would be on their own IP subnet.

If I reconfigured the metal host to be a router, could I still run that
metal host as a day to day desktop computer? Would I need to change
anything to do so?

Thanks,

SteveT

Steve Litt 
Spring 2021 featured book: Troubleshooting Techniques of the Successful
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