[OpenIndiana-discuss] OI Hipster becomes unreachable over network after a certain length of uptime

[Udo Grabowski (IMK)]

On 12/04/2022 21:12, Joshua M. Clulow via openindiana-discuss wrote:
> On Tue, 12 Apr 2022 at 11:52, Udo Grabowski (IMK) <udo.grabowski at kit.edu> wrote:
>> On 12/04/2022 20:42, Bob Friesenhahn wrote:
>>> On Tue, 12 Apr 2022, Judah Richardson wrote:
>>>> On Tue, Apr 12, 2022, 13:27 Udo Grabowski (IMK) <udo.grabowski at kit.edu>
>>>> wrote:
>>>>
>>>>> On 12/04/2022 20:00, John D Groenveld wrote:
>>>>>> In message <e042f009-5caa-bae0-5181-d294d4ad213b at kit.edu>, "Udo
>>>>> Grabowski (IMK)
>>>>>> " writes:
>>>>>>> No, it isn't, it's controlled by
>>>>>>> /lib/svc/manifest/network/routing/route.xml ,
>>>>>>> which is not enabled by default, as practically no machine
>>>>>>> in the field is working as a router, you have to specifically
>>>>>>> enable the route:default service.
>>>>>>
>>>>>> svc:/network/routing/route is enabled out of the box with
>>>>>> OI-hipster-text-20211031.iso
>>>>>
>>>>> Why ?? This hasn't been the case for at least two decades of
>>>>> Solaris and beyond.
>>>>
>>>> Probably an oversight, I'd guess. As with many such situations, things
>>>> that
>>>> aren't obviously and critically broken don't get much attention ;)
>>>
>>> It is not really an oversight since all computers with a TCP/IP stack
>>> need to deal with some level of routing even if they are not acting as a
>>> gateway.  If there is ever more than one way to get "there" via the L2
>>> network then running a higher-level routing protocol (e.g. RIP) can help
>>> the TCP/IP stack make the right decisions if the involved routers use
>>> the same protocol.  The host might participate in RIP or it might just
>>> act as an observer.
>>>
>>> In many cases one or more computers are attached to a shared L2 network
>>> with a single upstream router. In this case, using DHCP to configure the
>>> default route, or static configuration to provide the default route, can
>>> be a good choice. There are other means such as ICMP Router Discovery
>>> Protocol (https://en.wikipedia.org/wiki/ICMP_Router_Discovery_Protocol)
>>> or even ICMP redirects.
>>
>> I have a few machines with two L2 networks (a.k.a. tagged VPN), and even
>> those don't require the routing service. In fact, in my over 3 decades
>> of experience with Sun machines, I only once have seen that the routing
>> service had to be active. That one case was when I experimented with the
>> COMSTAR network simulation tools to play with virtual switches and
>> routers.
> 
> Goodness, what a lot of mails!
> 
> This is indeed a bug:
> 
>      14006 ipv4-routing should not be enabled by default
>          https://www.illumos.org/issues/14006
> 
> I haven't had time to work on it, but I am happy to talk it through
> with people who would like to pick it up and get it fixed!

In principle, the easiest fix is to revert to
<instance name='default' enabled='false' >
in the respective services in /lib/svc/manifest/network/routing/ .
But I've not seen a 202* OI version, I'm still on 2017...