Hi David,

Good thoughts, I don't see a reason you would want to do this except for legacy 
migration or such.

But your network understanding of this topic seems correct to me.

> What about a request initiated from Astlinux to an internal LAN device... say 
> ping 192.168.168.99 from Astlinux... will that come from .1 or .254?  Can it 
> be specified? And would I even care?

I think you can define a route with a source address, but without that probably 
the first occurring in "ip a" would be used.

Lonnie




> On Jun 23, 2019, at 5:15 PM, David Kerr <da...@kerr.net> wrote:
> 
> How does this work?
> 
> If my INTIF has both 192.168.168.1 and 192.168.168.254 then I assume that any 
> device on the local LAN could chose to connect to either of these IP 
> addresses and all would be well.  So any device on the LAN could ping to 
> either .1 or .254 and get a reply. Am I correct in thinking that Astlinux 
> would "reply" from the address that was used... so if I go to the web 
> interface at 192.168.168.254 then Astlinux will reply from that and not from 
> 192.168.168.1, or if I ping .254 then the reply will come from .254.
> 
> What about a request initiated from Astlinux to an internal LAN device... say 
> ping 192.168.168.99 from Astlinux... will that come from .1 or .254?  Can it 
> be specified? And would I even care?
> 
> Just wondering what the practical uses of this are.
> 
> Thanks
> David
> 
> 
> On Sun, Jun 23, 2019 at 5:40 PM Lonnie Abelbeck <li...@lonnie.abelbeck.com> 
> wrote:
> > Is this ok?
> 
> Yes, that should work.
> 
> Lonnie
> 
> 
> > On Jun 23, 2019, at 4:36 PM, Michael Knill 
> > <michael.kn...@ipcsolutions.com.au> wrote:
> > 
> > Sorry Lonnie
> > It would be another address in the same subnet as the address on the 
> > interface.
> > E.g. 192.168.168.254/24 and adding via ip a command 192.168.168.1/24.
> > 
> > Is this ok?
> > 
> > Regards
> > Michael Knill
> > 
> > On 24/6/19, 7:30 am, "Lonnie Abelbeck" <li...@lonnie.abelbeck.com> wrote:
> > 
> >> No it would be another address in the /24 range on the interface.
> > 
> >    You might have firewall issues doing that.
> > 
> >    Best practice is to have only one subnet off an interface.
> > 
> >    If a /24 won't do possibly a /22 will.  The 'netcalc' command in 
> > AstLinux can be helpful.
> > 
> >    Lonnie
> > 
> > 
> > 
> >> On Jun 23, 2019, at 3:54 PM, Michael Knill 
> >> <michael.kn...@ipcsolutions.com.au> wrote:
> >> 
> >> Thanks Lonnie
> >> No it would be another address in the /24 range on the interface.
> >> 
> >> Regards
> >> Michael Knill
> >> 
> >> On 23/6/19, 11:49 pm, "Lonnie Abelbeck" <li...@lonnie.abelbeck.com> wrote:
> >> 
> >> 
> >> 
> >>> On Jun 23, 2019, at 12:35 AM, Michael Knill 
> >>> <michael.kn...@ipcsolutions.com.au> wrote:
> >>> 
> >>> Hi Group
> >>> 
> >>> I know there is EXTIP_ALIAS for WAN interfaces but how would I put on a 
> >>> secondary IP Address for a LAN interface?
> >>> Do I need to use ‘ip addr add’ in rc.elocal?
> >> 
> >>   Hi Michael,
> >> 
> >>   Yes, rc.elocal would be the way to do that.
> >> 
> >>   I assume you are talking about adding a /32 .
> >> 
> >>   Lonnie
> >> 
> >> 
> >> 
> >> 
> >>   _______________________________________________
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> >>   https://lists.sourceforge.net/lists/listinfo/astlinux-users
> >> 
> >>   Donations to support AstLinux are graciously accepted via PayPal to 
> >> pay...@krisk.org.
> >> 
> >> 
> >> _______________________________________________
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> >> Astlinux-users@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/astlinux-users
> >> 
> >> Donations to support AstLinux are graciously accepted via PayPal to 
> >> pay...@krisk.org.
> > 
> > 
> > 
> >    _______________________________________________
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> >    Astlinux-users@lists.sourceforge.net
> >    https://lists.sourceforge.net/lists/listinfo/astlinux-users
> > 
> >    Donations to support AstLinux are graciously accepted via PayPal to 
> > pay...@krisk.org.
> > 
> > 
> > _______________________________________________
> > Astlinux-users mailing list
> > Astlinux-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/astlinux-users
> > 
> > Donations to support AstLinux are graciously accepted via PayPal to 
> > pay...@krisk.org.
> 
> 
> 
> _______________________________________________
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> 
> Donations to support AstLinux are graciously accepted via PayPal to 
> pay...@krisk.org.
> _______________________________________________
> Astlinux-users mailing list
> Astlinux-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/astlinux-users
> 
> Donations to support AstLinux are graciously accepted via PayPal to 
> pay...@krisk.org.



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