I have the same problem -- cannot connect to the network with radvd and
IPv6 configuration in network-manager set to automatic. It's not just
IPv6, network-manager fails to connect at all overy any protocol when
IPv6 configuration is set to automatic. For a while restarting network-
manager (service network-manager restart) helped and it configured
properly right after the restart but now it doesn't work at all, whether
it's cable
avahi-daemon[1023]: Registering new address record for fe80::212:3fff:fef8:a592
on eth0.*.
NetworkManager: <info> Device 'eth0' IP6 addrconf timed out or failed.
NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP6 Configure Timeout)
scheduled...
NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP6 Configure Timeout)
started...
NetworkManager: <info> (eth0): device state change: 7 -> 9 (reason 5)
NetworkManager: <info> Marking connection 'Auto eth0' invalid.
NetworkManager: <info> Activation (eth0) failed.
NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP6 Configure Timeout)
complete.
NetworkManager: <info> (eth0): device state change: 9 -> 3 (reason 0)
NetworkManager: <info> (eth0): deactivating device (reason: 0).
NetworkManager: <info> (eth0): canceled DHCP transaction, dhcp client pid 2096
or wifi
NetworkManager: <info> Device 'eth1' IP6 addrconf timed out or failed.
NetworkManager: <info> Activation (eth1) Stage 4 of 5 (IP6 Configure Timeout)
scheduled...
NetworkManager: <info> Activation (eth1) Stage 4 of 5 (IP6 Configure Timeout)
started...
NetworkManager: <info> (eth1): device state change: 7 -> 9 (reason 5)
NetworkManager: <info> Activation (eth1) failed for access point (soynet)
NetworkManager: <info> Marking connection 'Auto soynet' invalid.
NetworkManager: <info> Activation (eth1) failed.
NetworkManager: <info> Activation (eth1) Stage 4 of 5 (IP6 Configure Timeout)
complete.
NetworkManager: <info> (eth1): device state change: 9 -> 3 (reason 0)
NetworkManager: <info> (eth1): deactivating device (reason: 0).
NetworkManager: <info> (eth1): canceled DHCP transaction, dhcp client pid 2105
wpa_supplicant[1201]: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
network-manager just times out and disconnects. The prefix is properly
advertised on the network:
#
# radvd configuration generated by radvdump 1.6
# based on Router Advertisement from fe80::ecd9:12ff:fe66:3cce
# received by interface br-lan
#
interface br-lan
{
AdvSendAdvert on;
# Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump
AdvManagedFlag off;
AdvOtherConfigFlag off;
AdvReachableTime 0;
AdvRetransTimer 0;
AdvCurHopLimit 64;
AdvDefaultLifetime 1800;
AdvHomeAgentFlag off;
AdvDefaultPreference medium;
AdvSourceLLAddress on;
prefix my:correct:prefix::/64
{
AdvValidLifetime 86400;
AdvPreferredLifetime 14400;
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
}; # End of prefix definition
RDNSS fe80::ecd9:12ff:fe66:3cce
{
AdvRDNSSPreference 8;
AdvRDNSSOpen off;
AdvRDNSSLifetime 600;
}; # End of RDNSS definition
Another machine running Ubuntu Studio without network-manager can autoconfigure
just fine.
--
IPv6=automatic breaks IPv4
https://bugs.launchpad.net/bugs/284874
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