Bug#814566: networkd >= 229-1 starts assigning IPv6 addresses/ routes to lower bridge members
Stefan Lippers-Hollmann
s.l-h at gmx.de
Sat Feb 13 03:49:17 GMT 2016
Package: systemd
Version: 229-1
Severity: normal
Hi
After upgrading from systemd 228-6 to 229-1, I'm experiencing IPv6
connectivity issues. Debugging this shows some changes in the way
systemd-networkd (systemd-resolved is also in use) deals with bridges
and IPv6 addresses - apparently the lower bridge members (physical
ethernet cards) suddenly get their own IPv6 addresses/ routes assigned.
This messes up the routing table (lost packets) and also causes the
DHCPv6 address reservations to fail/ get mis-assigned.
I have attached my networkd configuration (/etc/systemd/network/) as
network.tar.gz; all virtual bridge member definitions (tap interfaces)
have been removed before debugging this for clarity. systemd-networkd
is the only active networking daemon, neither ifupdown nor
network-manager are installed on the system(s) in question.
[ I've partially obfuscated the he.net /48 prefix with '1234' instead
of the real one ]
My router hands out IP addresses via DHCP (10.0.0.0/8) and DHCPv6
(he.net tunnel 2001:470:1234:10::/64 (subset of a routed /48 prefix),
ULA prefix fd01:470:1234:10::/64), running a recent OpenWrt trunk
snapshot (r48686) on the ar71xx platform. There is no dhcpd/ dhcpv6d
running on the subnet connected to the br1 interface, nor any route
to the outside or any other network.
systemd 228-6:
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP group default qlen 1000
link/ether 94:de:80:02:ca:42 brd ff:ff:ff:ff:ff:ff
inet6 fe80::96de:80ff:fe02:ca42/64 scope link
valid_lft forever preferred_lft forever
3: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br1 state UP group default qlen 1000
link/ether 00:08:54:57:18:2c brd ff:ff:ff:ff:ff:ff
inet6 fe80::208:54ff:fe57:182c/64 scope link
valid_lft forever preferred_lft forever
4: br1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:08:54:57:18:2c brd ff:ff:ff:ff:ff:ff
inet 192.168.20.20/24 brd 192.168.20.255 scope global br1
valid_lft forever preferred_lft forever
inet6 fe80::208:54ff:fe57:182c/64 scope link
valid_lft forever preferred_lft forever
5: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 94:de:80:02:ca:42 brd ff:ff:ff:ff:ff:ff
inet 10.10.20.0/8 brd 10.255.255.255 scope global dynamic br0
valid_lft 43075sec preferred_lft 43075sec
inet6 fd01:470:1234:10::10:2000/128 scope global noprefixroute
valid_lft forever preferred_lft forever
inet6 fd01:470:1234:10:ec7c:da74:ab3e:a43/64 scope global temporary dynamic
valid_lft 604677sec preferred_lft 85677sec
inet6 fd01:470:1234:10:96de:80ff:fe02:ca42/64 scope global mngtmpaddr dynamic
valid_lft forever preferred_lft forever
inet6 2001:470:1234:10:ec7c:da74:ab3e:a43/64 scope global temporary dynamic
valid_lft 604677sec preferred_lft 85677sec
inet6 2001:470:1234:10:96de:80ff:fe02:ca42/64 scope global mngtmpaddr dynamic
valid_lft forever preferred_lft forever
inet6 fe80::96de:80ff:fe02:ca42/64 scope link
valid_lft forever preferred_lft forever
$ ip r
default via 10.0.0.1 dev br0 proto dhcp src 10.10.20.0 metric 1024
10.0.0.0/8 dev br0 proto kernel scope link src 10.10.20.0
10.0.0.1 dev br0 proto dhcp scope link src 10.10.20.0 metric 1024
192.168.20.0/24 dev br1 proto kernel scope link src 192.168.20.20
$ ip -6 r
2001:470:1234:10::/64 dev br0 proto kernel metric 256 mtu 1424 pref medium
fd01:470:1234:10::/64 dev br0 proto kernel metric 256 mtu 1424 pref medium
fe80::/64 dev enp2s0 proto kernel metric 256 pref medium
fe80::/64 dev br0 proto kernel metric 256 mtu 1424 pref medium
fe80::/64 dev enp4s0 proto kernel metric 256 pref medium
fe80::/64 dev br1 proto kernel metric 256 pref medium
default via fe80::92f6:52ff:fef6:c88 dev br0 proto ra metric 1024 expires 65480sec mtu 1424 hoplimit 64 pref medium
# systemctl status -l systemd-networkd.service
● systemd-networkd.service - Network Service
Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled; vendor preset: enabled)
Active: active (running) since Sa 2016-02-13 04:22:36 CET; 3min 55s ago
Docs: man:systemd-networkd.service(8)
Main PID: 493 (systemd-network)
Status: "Processing requests..."
Tasks: 1 (limit: 512)
CGroup: /system.slice/systemd-networkd.service
└─493 /lib/systemd/systemd-networkd
Feb 13 04:22:41 poseidon systemd-networkd[493]: enp4s0: Gained IPv6LL
Feb 13 04:22:41 poseidon systemd-networkd[493]: enp4s0: Configured
Feb 13 04:22:41 poseidon systemd-networkd[493]: br1: Gained IPv6LL
Feb 13 04:22:41 poseidon systemd-networkd[493]: br1: Configured
Feb 13 04:22:42 poseidon systemd-networkd[493]: br1: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:42 poseidon systemd-networkd[493]: enp4s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:42 poseidon systemd-networkd[493]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:46 poseidon systemd-networkd[493]: br1: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:46 poseidon systemd-networkd[493]: enp4s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:46 poseidon systemd-networkd[493]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
# journalctl -u systemd-networkd.service
-- Logs begin at Sa 2016-02-13 04:22:31 CET, end at Sa 2016-02-13 04:23:23 CET. --
Feb 13 04:22:36 poseidon systemd[1]: Starting Network Service...
Feb 13 04:22:36 poseidon systemd-networkd[493]: br0: netdev ready
Feb 13 04:22:36 poseidon systemd-networkd[493]: br1: netdev ready
Feb 13 04:22:36 poseidon systemd-networkd[493]: Enumeration completed
Feb 13 04:22:36 poseidon systemd[1]: Started Network Service.
Feb 13 04:22:36 poseidon systemd-networkd[493]: enp2s0: Gained carrier
Feb 13 04:22:36 poseidon systemd-networkd[493]: br0: Gained carrier
Feb 13 04:22:36 poseidon systemd-networkd[493]: br0: DHCPv4 address 10.10.20.0/8 via 10.0.0.1
Feb 13 04:22:37 poseidon systemd-networkd[493]: br0: Gained IPv6LL
Feb 13 04:22:37 poseidon systemd-networkd[493]: br0: Configured
Feb 13 04:22:38 poseidon systemd-networkd[493]: enp2s0: Gained IPv6LL
Feb 13 04:22:38 poseidon systemd-networkd[493]: enp2s0: Configured
Feb 13 04:22:38 poseidon systemd-networkd[493]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:38 poseidon systemd-networkd[493]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:38 poseidon systemd-networkd[493]: br0: DHCPv6 address fd01:0470:1234:0010:0000:0000:0010:2000/128 timeout preferred -1 valid -1
Feb 13 04:22:39 poseidon systemd-networkd[493]: enp4s0: Gained carrier
Feb 13 04:22:39 poseidon systemd-networkd[493]: br1: Gained carrier
Feb 13 04:22:41 poseidon systemd-networkd[493]: enp4s0: Gained IPv6LL
Feb 13 04:22:41 poseidon systemd-networkd[493]: enp4s0: Configured
Feb 13 04:22:41 poseidon systemd-networkd[493]: br1: Gained IPv6LL
Feb 13 04:22:41 poseidon systemd-networkd[493]: br1: Configured
Feb 13 04:22:42 poseidon systemd-networkd[493]: br1: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:42 poseidon systemd-networkd[493]: enp4s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:42 poseidon systemd-networkd[493]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:46 poseidon systemd-networkd[493]: br1: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:46 poseidon systemd-networkd[493]: enp4s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:22:46 poseidon systemd-networkd[493]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
systemd 229-1:
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br1 state UP group default qlen 1000
link/ether 00:08:54:57:18:2c brd ff:ff:ff:ff:ff:ff
inet6 fe80::208:54ff:fe57:182c/64 scope link
valid_lft forever preferred_lft forever
3: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP group default qlen 1000
link/ether 94:de:80:02:ca:42 brd ff:ff:ff:ff:ff:ff
inet6 fd01:470:1234:10:96de:80ff:fe02:ca42/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 2001:470:1234:10:96de:80ff:fe02:ca42/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::96de:80ff:fe02:ca42/64 scope link
valid_lft forever preferred_lft forever
4: br1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:08:54:57:18:2c brd ff:ff:ff:ff:ff:ff
inet 192.168.20.20/24 brd 192.168.20.255 scope global br1
valid_lft forever preferred_lft forever
inet6 fe80::208:54ff:fe57:182c/64 scope link
valid_lft forever preferred_lft forever
5: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 94:de:80:02:ca:42 brd ff:ff:ff:ff:ff:ff
inet 10.10.20.0/8 brd 10.255.255.255 scope global dynamic br0
valid_lft 42563sec preferred_lft 42563sec
inet6 fd01:470:1234:10::10:2000/128 scope global noprefixroute
valid_lft forever preferred_lft forever
inet6 fd01:470:1234:10:dc66:ae3c:3f5b:497f/64 scope global temporary dynamic
valid_lft 604165sec preferred_lft 85165sec
inet6 fd01:470:1234:10:96de:80ff:fe02:ca42/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 2001:470:1234:10:dc66:ae3c:3f5b:497f/64 scope global temporary dynamic
valid_lft 604165sec preferred_lft 85165sec
inet6 2001:470:1234:10:96de:80ff:fe02:ca42/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::96de:80ff:fe02:ca42/64 scope link
valid_lft forever preferred_lft forever
$ ip r
default via 10.0.0.1 dev br0 proto dhcp src 10.10.20.0 metric 1024
10.0.0.0/8 dev br0 proto kernel scope link src 10.10.20.0
10.0.0.1 dev br0 proto dhcp scope link src 10.10.20.0 metric 1024
192.168.20.0/24 dev br1 proto kernel scope link src 192.168.20.20
$ ip -6 r
2001:470:1234:10::/64 dev br0 proto ra metric 1024 pref medium
2001:470:1234:10::/64 dev enp2s0 proto ra metric 1024 pref medium
2001:470:1234:10::/64 dev br1 proto ra metric 1024 pref medium
2001:470:1234:10::/64 dev enp4s0 proto ra metric 1024 pref medium
fd01:470:1234:10::/64 dev br0 proto ra metric 1024 pref medium
fd01:470:1234:10::/64 dev enp2s0 proto ra metric 1024 pref medium
fd01:470:1234:10::/64 dev br1 proto ra metric 1024 pref medium
fd01:470:1234:10::/64 dev enp4s0 proto ra metric 1024 pref medium
fe80::/64 dev enp2s0 proto kernel metric 256 pref medium
fe80::/64 dev br0 proto kernel metric 256 pref medium
fe80::/64 dev enp4s0 proto kernel metric 256 pref medium
fe80::/64 dev br1 proto kernel metric 256 pref medium
default via fe80::92f6:52ff:fef6:c88 dev br0 proto ra metric 1024 pref medium
default via fe80::92f6:52ff:fef6:c88 dev enp2s0 proto ra metric 1024 pref medium
default via fe80::92f6:52ff:fef6:c88 dev br1 proto ra metric 1024 pref medium
default via fe80::92f6:52ff:fef6:c88 dev enp4s0 proto ra metric 1024 pref medium
● systemd-networkd.service - Network Service
Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled; vendor preset: enabled)
Active: active (running) since Sa 2016-02-13 04:16:12 CET; 3min 59s ago
Docs: man:systemd-networkd.service(8)
Main PID: 486 (systemd-network)
Status: "Processing requests..."
Tasks: 1 (limit: 512)
CGroup: /system.slice/systemd-networkd.service
└─486 /lib/systemd/systemd-networkd
Feb 13 04:16:15 poseidon systemd-networkd[486]: enp4s0: Gained carrier
Feb 13 04:16:15 poseidon systemd-networkd[486]: br1: Gained carrier
Feb 13 04:16:16 poseidon systemd-networkd[486]: enp2s0: Configured
Feb 13 04:16:16 poseidon systemd-networkd[486]: enp4s0: Gained IPv6LL
Feb 13 04:16:17 poseidon systemd-networkd[486]: br1: Gained IPv6LL
Feb 13 04:16:17 poseidon systemd-networkd[486]: br0: Configured
Feb 13 04:16:29 poseidon systemd-networkd[486]: enp4s0: Starting DHCPv6 client after NDisc timeout failed: Invalid argument
Feb 13 04:16:29 poseidon systemd-networkd[486]: enp4s0: Configured
Feb 13 04:16:29 poseidon systemd-networkd[486]: br1: Starting DHCPv6 client after NDisc timeout failed: Invalid argument
Feb 13 04:16:29 poseidon systemd-networkd[486]: br1: Configured
# journalctl -u systemd-networkd.service
-- Logs begin at Sa 2016-02-13 04:16:07 CET, end at Sa 2016-02-13 04:17:01 CET. --
Feb 13 04:16:12 poseidon systemd[1]: Starting Network Service...
Feb 13 04:16:12 poseidon systemd-networkd[486]: br0: netdev ready
Feb 13 04:16:12 poseidon systemd-networkd[486]: br1: netdev ready
Feb 13 04:16:12 poseidon systemd-networkd[486]: Enumeration completed
Feb 13 04:16:12 poseidon systemd[1]: Started Network Service.
Feb 13 04:16:12 poseidon systemd-networkd[486]: enp2s0: Gained carrier
Feb 13 04:16:12 poseidon systemd-networkd[486]: br0: Gained carrier
Feb 13 04:16:12 poseidon systemd-networkd[486]: br0: DHCPv4 address 10.10.20.0/8 via 10.0.0.1
Feb 13 04:16:14 poseidon systemd-networkd[486]: enp2s0: Gained IPv6LL
Feb 13 04:16:14 poseidon systemd-networkd[486]: br0: Gained IPv6LL
Feb 13 04:16:14 poseidon systemd-networkd[486]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:16:15 poseidon systemd-networkd[486]: br0: DHCPv6 address fd01:0470:1234:0010:0000:0000:0010:2000/128 timeout preferred -1 valid -1
Feb 13 04:16:15 poseidon systemd-networkd[486]: enp4s0: Gained carrier
Feb 13 04:16:15 poseidon systemd-networkd[486]: br1: Gained carrier
Feb 13 04:16:16 poseidon systemd-networkd[486]: enp2s0: Configured
Feb 13 04:16:16 poseidon systemd-networkd[486]: enp4s0: Gained IPv6LL
Feb 13 04:16:17 poseidon systemd-networkd[486]: br1: Gained IPv6LL
Feb 13 04:16:17 poseidon systemd-networkd[486]: br0: Configured
Feb 13 04:16:29 poseidon systemd-networkd[486]: enp4s0: Starting DHCPv6 client after NDisc timeout failed: Invalid argument
Feb 13 04:16:29 poseidon systemd-networkd[486]: enp4s0: Configured
Feb 13 04:16:29 poseidon systemd-networkd[486]: br1: Starting DHCPv6 client after NDisc timeout failed: Invalid argument
Feb 13 04:16:29 poseidon systemd-networkd[486]: br1: Configured
There is one potentially uncommon part of my systemd-networkd
configuration, I'm hardcoding the MAC address of the bridge (br0/ br1)
to the MAC address of the underlying physical network card (br0 gets
assigned the same MAC address as its bridge member enp2s0). I do this
in order to always get the same IPv4/ IPv6 addresses via its static
DHCP/ DHCPv6 lease and its associated DNS entries, regardless of the OS
or configuration being started. However changing this for testing
(incrementing the bridge's MAC address by 1) doesn't show any change in
behaviour.
systemd 229-1 with different/ incremented MAC addresses:
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br1 state UP group default qlen 1000
link/ether 00:08:54:57:18:2c brd ff:ff:ff:ff:ff:ff
inet6 fd01:470:1234:10:208:54ff:fe57:182c/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 2001:470:1234:10:208:54ff:fe57:182c/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::208:54ff:fe57:182c/64 scope link
valid_lft forever preferred_lft forever
3: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP group default qlen 1000
link/ether 94:de:80:02:ca:42 brd ff:ff:ff:ff:ff:ff
inet6 fd01:470:1234:10:96de:80ff:fe02:ca42/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 2001:470:1234:10:96de:80ff:fe02:ca42/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::96de:80ff:fe02:ca42/64 scope link
valid_lft forever preferred_lft forever
4: br1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:08:54:57:18:2d brd ff:ff:ff:ff:ff:ff
inet 192.168.20.20/24 brd 192.168.20.255 scope global br1
valid_lft forever preferred_lft forever
inet6 fd01:470:1234:10:208:54ff:fe57:182d/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 2001:470:1234:10:208:54ff:fe57:182d/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::208:54ff:fe57:182d/64 scope link
valid_lft forever preferred_lft forever
5: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 94:de:80:02:ca:43 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.179/8 brd 10.255.255.255 scope global dynamic br0
valid_lft 42452sec preferred_lft 42452sec
inet6 fd01:470:1234:10::f14/128 scope global noprefixroute
valid_lft forever preferred_lft forever
inet6 fd01:470:1234:10:a81f:51eb:3b60:442/64 scope global temporary dynamic
valid_lft 604051sec preferred_lft 85051sec
inet6 fd01:470:1234:10:96de:80ff:fe02:ca43/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 2001:470:1234:10:a81f:51eb:3b60:442/64 scope global temporary dynamic
valid_lft 604051sec preferred_lft 85051sec
inet6 2001:470:1234:10:96de:80ff:fe02:ca43/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::96de:80ff:fe02:ca43/64 scope link
valid_lft forever preferred_lft forever
$ ip r
default via 10.0.0.1 dev br0 proto dhcp src 10.0.0.179 metric 1024
10.0.0.0/8 dev br0 proto kernel scope link src 10.0.0.179
10.0.0.1 dev br0 proto dhcp scope link src 10.0.0.179 metric 1024
192.168.20.0/24 dev br1 proto kernel scope link src 192.168.20.20
$ ip -6 r
2001:470:1234:10::/64 dev br0 proto ra metric 1024 pref medium
2001:470:1234:10::/64 dev enp4s0 proto ra metric 1024 pref medium
2001:470:1234:10::/64 dev br1 proto ra metric 1024 pref medium
2001:470:1234:10::/64 dev enp2s0 proto ra metric 1024 pref medium
fd01:470:1234:10::/64 dev br0 proto ra metric 1024 pref medium
fd01:470:1234:10::/64 dev enp4s0 proto ra metric 1024 pref medium
fd01:470:1234:10::/64 dev br1 proto ra metric 1024 pref medium
fd01:470:1234:10::/64 dev enp2s0 proto ra metric 1024 pref medium
fe80::/64 dev enp2s0 proto kernel metric 256 pref medium
fe80::/64 dev br0 proto kernel metric 256 pref medium
fe80::/64 dev enp4s0 proto kernel metric 256 pref medium
fe80::/64 dev br1 proto kernel metric 256 pref medium
default via fe80::92f6:52ff:fef6:c88 dev br0 proto ra metric 1024 pref medium
default via fe80::92f6:52ff:fef6:c88 dev enp4s0 proto ra metric 1024 pref medium
default via fe80::92f6:52ff:fef6:c88 dev br1 proto ra metric 1024 pref medium
default via fe80::92f6:52ff:fef6:c88 dev enp2s0 proto ra metric 1024 pref medium
# systemctl status -l systemd-networkd.service
● systemd-networkd.service - Network Service
Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled; vendor preset: enabled)
Active: active (running) since Sa 2016-02-13 03:37:26 CET; 32min ago
Docs: man:systemd-networkd.service(8)
Main PID: 487 (systemd-network)
Status: "Processing requests..."
Tasks: 1 (limit: 512)
CGroup: /system.slice/systemd-networkd.service
└─487 /lib/systemd/systemd-networkd
Feb 13 03:37:43 poseidon systemd-networkd[487]: br1: Starting DHCPv6 client after NDisc timeout failed: Invalid argument
Feb 13 03:37:43 poseidon systemd-networkd[487]: br1: Configured
Feb 13 03:37:43 poseidon systemd-networkd[487]: enp4s0: Starting DHCPv6 client after NDisc timeout failed: Invalid argument
Feb 13 03:37:43 poseidon systemd-networkd[487]: enp4s0: Configured
Feb 13 03:41:54 poseidon systemd-networkd[487]: enp4s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 03:41:54 poseidon systemd-networkd[487]: br1: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 03:41:54 poseidon systemd-networkd[487]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:09:31 poseidon systemd-networkd[487]: enp4s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:09:31 poseidon systemd-networkd[487]: br1: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:09:31 poseidon systemd-networkd[487]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
# journalctl -u systemd-networkd.service
-- Logs begin at Sa 2016-02-13 03:37:21 CET, end at Sa 2016-02-13 04:09:31 CET. --
Feb 13 03:37:26 poseidon systemd[1]: Starting Network Service...
Feb 13 03:37:26 poseidon systemd-networkd[487]: br0: netdev ready
Feb 13 03:37:26 poseidon systemd-networkd[487]: br1: netdev ready
Feb 13 03:37:26 poseidon systemd-networkd[487]: Enumeration completed
Feb 13 03:37:26 poseidon systemd-networkd[487]: enp2s0: Gained carrier
Feb 13 03:37:26 poseidon systemd-networkd[487]: br0: Gained carrier
Feb 13 03:37:26 poseidon systemd[1]: Started Network Service.
Feb 13 03:37:28 poseidon systemd-networkd[487]: br0: Gained IPv6LL
Feb 13 03:37:28 poseidon systemd-networkd[487]: enp2s0: Gained IPv6LL
Feb 13 03:37:29 poseidon systemd-networkd[487]: br0: DHCPv6 address fd01:0470:1234:0010:0000:0000:0000:0f14/128 timeout preferred -1 valid -1
Feb 13 03:37:29 poseidon systemd-networkd[487]: br0: DHCPv4 address 10.0.0.179/8 via 10.0.0.1
Feb 13 03:37:29 poseidon systemd-networkd[487]: enp4s0: Gained carrier
Feb 13 03:37:29 poseidon systemd-networkd[487]: br1: Gained carrier
Feb 13 03:37:30 poseidon systemd-networkd[487]: br1: Gained IPv6LL
Feb 13 03:37:30 poseidon systemd-networkd[487]: enp4s0: Gained IPv6LL
Feb 13 03:37:31 poseidon systemd-networkd[487]: br0: Configured
Feb 13 03:37:40 poseidon systemd-networkd[487]: enp2s0: Starting DHCPv6 client after NDisc timeout failed: Invalid argument
Feb 13 03:37:40 poseidon systemd-networkd[487]: enp2s0: Configured
Feb 13 03:37:43 poseidon systemd-networkd[487]: br1: Starting DHCPv6 client after NDisc timeout failed: Invalid argument
Feb 13 03:37:43 poseidon systemd-networkd[487]: br1: Configured
Feb 13 03:37:43 poseidon systemd-networkd[487]: enp4s0: Starting DHCPv6 client after NDisc timeout failed: Invalid argument
Feb 13 03:37:43 poseidon systemd-networkd[487]: enp4s0: Configured
Feb 13 03:41:54 poseidon systemd-networkd[487]: enp4s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 03:41:54 poseidon systemd-networkd[487]: br1: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 03:41:54 poseidon systemd-networkd[487]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:09:31 poseidon systemd-networkd[487]: enp4s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:09:31 poseidon systemd-networkd[487]: br1: Starting DHCPv6 client on NDisc request failed: Invalid argument
Feb 13 04:09:31 poseidon systemd-networkd[487]: enp2s0: Starting DHCPv6 client on NDisc request failed: Invalid argument
The lower (physical-) bridge members only get their IPv6 addresses
after a couple of minutes, immediately after rebooting it's still all
fine; this attached configuration has been working well for me for
many months before. I see this behaviour on multiple systems, all
with very similar configurations (most with more than just two
physical/ independent subnets (no interconnections) and typically
with 15-20 tap interfaces used for virtual (kvm) machines).
I can reproduce this with src:systemd 229-1, reverting all installed
src:systemd packages to 228-6 fixes the issue again.
Regards
Stefan Lippers-Hollmann
-- Package-specific info:
-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.4.0-1.slh.1-aptosid-amd64 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages systemd depends on:
ii adduser 3.113+nmu3
ii libacl1 2.2.52-3
ii libapparmor1 2.10-3
ii libaudit1 1:2.4.5-1
ii libblkid1 2.27.1-3
ii libc6 2.21-7
ii libcap2 1:2.24-12
ii libcap2-bin 1:2.24-12
ii libcryptsetup4 2:1.7.0-2
ii libgcrypt20 1.6.4-5
ii libgpg-error0 1.21-1
ii libkmod2 22-1
ii liblzma5 5.1.1alpha+20120614-2.1
ii libmount1 2.27.1-3
ii libpam0g 1.1.8-3.2
ii libseccomp2 2.2.3-2
ii libselinux1 2.4-3
ii libsystemd0 229-1
ii mount 2.27.1-3
ii util-linux 2.27.1-3
Versions of packages systemd recommends:
ii dbus 1.10.6-1
ii libpam-systemd 229-1
Versions of packages systemd suggests:
pn systemd-container <none>
pn systemd-ui <none>
Versions of packages systemd is related to:
ii udev 229-1
-- no debconf information
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