GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0" -> is not recommended at all, and might be harmful.
Do you have persistent interface names udev .rules file generated? That alone should be sufficient as that locks the eth* names by macaddress. The problem is that there is no guarantee that same interface keeps the same eth number across reboots. If you do not have persistent-net-rules generated, please do so if you insist on using eth* names instead of stable device names. We have discovered that race conditions exist in ifupdown with systemd as pid1 resulting in certain paragraphs not executed correctly under certain rare circumstances. It might be possible to mitigate them, for your particular case, by adding a few more dependencies between [email protected] and netowkring.service units. For general case, I can only recommend to stop using ifupdown and migrate to netplan/networkd based configuration which is more reliable. On the other hand it is declarative, rather than arbitrary/turning- complete ifupdown configuration format. Nonetheless such a simple case of just static IP addresses should really ought to work without a hitch.... ** Tags added: rls-aa-incoming ** Tags added: rls-bb-incoming rls-x-incoming -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ifupdown in Ubuntu. https://bugs.launchpad.net/bugs/1608054 Title: IPv6 static addresses in multiple interfaces can't be configured thru interfaces file Status in ifupdown package in Ubuntu: Confirmed Bug description: Just installed 16.04 over a 14 version. I discovered that the actual interfaces file is not working correctly. Tried many choices, even using pre-up sleep 10 before configuring the IPv6 manual addresses, but didn't worked. This is the example file: auto lo iface lo inet loopback allow-hotplug eth0 iface eth0 inet static mtu 9000 address 172.16.0.7 netmask 255.255.255.0 dns-nameservers 10.10.10.3 80.58.61.250 80.58.61.254 8.8.8.8 8.8.4.4 2001:470:1f09:495::3 2001:470:20::2 iface eth0 inet6 auto allow-hotplug eth1 iface eth1 inet static mtu 9000 address 10.10.10.7 netmask 255.255.255.0 iface eth1 inet6 static autoconf 0 accept_ra 0 address 2001:470:1f09:495::7 netmask 64 allow-hotplug eth2 iface eth2 inet static mtu 9000 address 10.10.9.7 netmask 255.255.255.0 gateway 10.10.9.1 iface eth2 inet6 static autoconf 0 accept_ra 0 address 2001:470:1f1d:275::7 netmask 64 gateway fe80::1 As you can see, both, eth1 and eth2 have manual/static IPv6 addresses. Each one is in a different router. Only eth2 is the default gateway (eth1 is usen only for internal communication with another LAN). However, after reboot, the ifconfig shows: eth0 Link encap:Ethernet direcciónHW 00:0c:29:64:c6:32 Direc. inet:172.16.0.7 Difus.:172.16.0.255 Másc:255.255.255.0 Dirección inet6: fe80::20c:29ff:fe64:c632/64 Alcance:Enlace ACTIVO DIFUSIÓN FUNCIONANDO MULTICAST MTU:9000 Métrica:1 Paquetes RX:17 errores:0 perdidos:0 overruns:0 frame:0 Paquetes TX:32 errores:0 perdidos:0 overruns:0 carrier:0 colisiones:0 long.colaTX:1000 Bytes RX:1500 (1.5 KB) TX bytes:3805 (3.8 KB) eth1 Link encap:Ethernet direcciónHW 00:0c:29:64:c6:3c Direc. inet:10.10.10.7 Difus.:10.10.10.255 Másc:255.255.255.0 Dirección inet6: 2001:470:1f09:495::7/64 Alcance:Global Dirección inet6: fe80::20c:29ff:fe64:c63c/64 Alcance:Enlace ACTIVO DIFUSIÓN FUNCIONANDO MULTICAST MTU:9000 Métrica:1 Paquetes RX:291 errores:0 perdidos:2 overruns:0 frame:0 Paquetes TX:144 errores:0 perdidos:0 overruns:0 carrier:0 colisiones:0 long.colaTX:1000 Bytes RX:34692 (34.6 KB) TX bytes:16360 (16.3 KB) eth2 Link encap:Ethernet direcciónHW 00:0c:29:64:c6:46 Direc. inet:10.10.9.7 Difus.:10.10.9.255 Másc:255.255.255.0 Dirección inet6: fe80::20c:29ff:fe64:c646/64 Alcance:Enlace ACTIVO DIFUSIÓN FUNCIONANDO MULTICAST MTU:9000 Métrica:1 Paquetes RX:1281 errores:0 perdidos:0 overruns:0 frame:0 Paquetes TX:755 errores:0 perdidos:0 overruns:0 carrier:0 colisiones:0 long.colaTX:1000 Bytes RX:105008 (105.0 KB) TX bytes:1554705 (1.5 MB) lo Link encap:Bucle local Direc. inet:127.0.0.1 Másc:255.0.0.0 Dirección inet6: ::1/128 Alcance:Anfitrión ACTIVO BUCLE FUNCIONANDO MTU:65536 Métrica:1 Paquetes RX:818 errores:0 perdidos:0 overruns:0 frame:0 Paquetes TX:818 errores:0 perdidos:0 overruns:0 carrier:0 colisiones:0 long.colaTX:1 Bytes RX:136866 (136.8 KB) TX bytes:136866 (136.8 KB) All what I tried fails. If I issue a manual: ip -6 addr add 2001:470:1f1d:275::7/64 dev eth2 it works. I've noticed not sure if this is relevant, that the file /etc/network/run/ifstate.eth2 is empty, and /etc/network/run/ifstate only contains the other interfaces, but not eth2: eth1=eth1 eth0=eth0 lo=lo Before the upgrade it contained all the interfaces. I've used GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0", to keep the original interface names, not sure if that's relevant, just in case. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1608054/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
