Hello, li...@onemanifest.net a écrit : > > I've setup static adressing for both NICs for ipv4 and ipv6 like this: > > # The primary LAN network interface > allow-hotplug eth0 > iface eth0 inet static > address 192.168.1.xx > netmask 255.255.255.0 > gateway 192.168.1.1 > > iface eth0 inet6 static > address 2001:xxxx:xxxx:3::20 > netmask 64 > gateway 2001:xxxx:xxxx:3::1 > > # The secondary DMZ network interface > allow-hotplug eth1 > iface eth1 inet static > address 192.168.0.xx > netmask 255.255.255.0 > gateway 192.168.0.1 > > iface eth1 inet6 static > address 2001:xxxx:xxxx:2::20 > netmask 64 > gateway 2001:xxxx:xxxx:2::1 > > The NICs are configured fine, but only _one_ ipv6 gets assigned. After a > reboot either > eth0 or eth1 gets it's ipv6 assigned, never both.
I could reproduce it on a test machine. This looks like a tricky side-effect of multiple IPv4 default gateways. Here is what happens : One interface is configured first. Since you used "allow-hotplug" insteald of "auto", the order may vary, depending on the discovery order by udev. When the second interface is configured for IPv4, ifup adds the address, tries to add the default route and gets an error because a default route already exists. Then it stops trying to configure the interface, including the IPv6 configuration. Bottom line : don't define a gateway on multiple interfaces unless you are sure that only one interface is active at a time. It usually won't work the way you expect. "Default" means no other choice. If there are two active gateways then you still have to make a choice. Thus defining two active default gateways makes no sense. > Also, I noticed that if I ping6 a host is subnet A from a NIC in > subnet B, the servers ip6 in subnet A is used as source ip, even if an > ipv6 in subnet B is available on that NIC. Does this mean that the > return traffic is routed over subnet A in stead of B? This is not > desirable since I'd like the traffic between both subnets to be > fire-walled by the router. I tried hard and failed to understand what you mean. Please describe more precisely what are the host, NIC, subnets, servers, router you're talking about, how they relate to the above, the commands you run and the results you observe. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/548cbf27.3030...@plouf.fr.eu.org
