[RndTbl] shaw 2nd ip

Gilbert E. Detillieux gedetil at cs.umanitoba.ca
Thu Dec 2 09:18:05 CST 2021


Is Linux policy routing what you mean?...

https://blog.scottlowe.org/2013/05/29/a-quick-introduction-to-linux-policy-routing/

See also...

https://www.kernel.org/doc/Documentation/networking/vrf.txt
https://tldp.org/HOWTO/pdf/Adv-Routing-HOWTO.pdf

Gilbert

On 2021-12-01 8:12 p.m., Adam Thompson wrote:
> If you have two interfaces where traffic must remain separated (i.e. inbound connection to IP #1 needs reply packets from #1, inbound connection to #2 needs reply packets from #2) you'll also need to look into Routing Domains or Routing Tables - can't remember offhand what Linux calls them.  On a router, we'd call this a VRF, or a Virtual Routing Instance.  Basically, you no longer have one set of routes, you have two sets.  Each interface is a "member" of one set or the other, not both.
> -Adam
> 
> -----Original Message-----
> From: Roundtable <roundtable-bounces at muug.ca> On Behalf Of Trevor Cordes
> Sent: Wednesday, December 1, 2021 7:56 PM
> To: roundtable at muug.ca
> Subject: Re: [RndTbl] shaw 2nd ip
> 
> Thanks everyone, from all the replies it looks like I should be able to pull it off, and probably with just the one CAT6 cable to one port on the modem.  If that fails, maybe better luck using 2 CAT6 cables between modem and computer (can do another NIC, or go through a VLAN in my switch).
> 
> The real fun comes when I try to update my manual firewall rules for yet another interface, and then routing only some packets to the new interface... That is going to take some serious time.
> 
> I think I have the Hitron modem, but I'm not positive (and it's currently buried pretty well).
> 
> I'll report back if/when I make it work!  Thanks!

-- 
Gilbert E. Detillieux		E-mail:	<gedetil at cs.umanitoba.ca>
Dept. of Computer Science	Web:	http://www.cs.umanitoba.ca/~gedetil/
University of Manitoba		Phone:	(204)474-8161
Winnipeg MB CANADA  R3T 2N2
For best service, contact <cstech at cs.umanitoba.ca>.


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