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Re: IPv6 static config in /etc/network/interfaces ignored

Le 27/01/2019 à 16:29, Claudio M a écrit :

auto eth0
iface eth0 inet static
   address a.b.c.d
   gateway c.d.e.f
   up route add -net a.b.c.x netmask gw c.d.e.x dev eth0

AFAIK, the gateway must be directly reachable on eth0. But c.d.e.x does not seem to belong to a.b.c.d/

   up ip addr add f.g.h.i/32 dev eth0
   down ip addr del  f.g.h.i /32 dev eth0

Hackish. You can create a second inet stanza instead.

   post-up /etc/network/iptables.sh

Is there a chance that this script returns a non zero value ?

iface eth0 inet6 static
   address 2a01:xxxx:xxxx:xxxx::2
   netmask 64
   gateway fe80::1

What is the output of

 service networking status

Did you try to swap the inet and inet6 stanzas ?