Subj : Re: Networking Questions
To   : Avon
From : acn
Date : Fri Jun 18 2021 10:15 am

Am 18.06.21 schrieb Avon@21:1/101 in FSX_NET:

Hallo Avon,

Two ideas:

First, if you prefer "eth0" over "enp4sdfsd523", you can change this  
behaviour in the kernel commandline by adding these parameters:
   net.ifnames=0 biosdevname=0

For the RasPi, it should be a file on the /boot partition.

The enps432 devices get its name during bootup with the intention to be  
predictible, so that eth0 won't be eth1 on the next boot.
This could happen as the eth-devices get its numbers in the order of  
activation by the drivers which is not garuanteed to be always in the same  
order. But if you only have one eth device, it's okay this way :)
(and eth0 is much better to memorize...)

A> It seems nutty how hard it is to set a static IPv6 address and desired
A> gateway and keep everything else working :(

On my BBS machine, I use the following lines in /etc/network/interfaces:

==== cut here for new monitor ====
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
  address 192.168.14.85
  netmask 255.255.255.0
  gateway 192.168.14.1
  dns-search narnia.lan
  dns-nameservers 192.168.14.5 192.168.14.1

iface eth0 inet6 static
  privext 0
  address 2001:470:540b::f1d0:2:240:5824/64
==== cut here for new monitor ====

This results in this "ip a" output for eth0:

==== cut here for new monitor ====
2: eth0:  ...
  link/ether 00:e0:c5:3b:eb:0c brd ff:ff:ff:ff:ff:ff
  inet 192.168.14.85/24 brd 192.168.14.255 scope global eth0
     valid_lft forever preferred_lft forever
  inet6 2001:470:540b:0:f1d0:2:240:5824/64 scope global
     valid_lft forever preferred_lft forever
  inet6 fe80::2e0:c5ff:fe3b:eb0c/64 scope link
     valid_lft forever preferred_lft forever
==== cut here for new monitor ====

I just noticed that in your "ip a" output, your inet6 entries have the  
option "noprefixroute" set.
As far as I understand it, this means that no default route for this  
address has been (automatically) added.

So, if your problem persists, try looking at your IPv6 routing table using  
"route -n6" and search for your IPv6 default route, in my case it is:

::/0          fe80::464e:6dff:fe22:35c   UGDAe 1024 2     0 eth0

But I don't remember doing anything special to have this route be  
created...

How are you advertising your prefix in your LAN?
In my case, my tunnel endpoint is on my DSL router (AVM FritzBox) and  
"router advertisement" is active here.
As far as I know, via router advertisement also the default gateway can be  
sent to the clients. Is this configured?

I hope that helps you a little.

Regards,
Anna

--- OpenXP 5.0.50
 * Origin: Imzadi Box Point (21:3/127.1)

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