On 08/03/2012 05:33 PM, Dan Williams expounded in part:
That's correct, but at the time that bug was filed I did not know enough
about IPv6 configuration to suggest the correct course of action. I now
know much more and realize that adding it back was a mistake. We should
really deprecate that option and just alias it to "automatic".
DHCPv6-only without RAs is fundamentally broken. Any valid
configuration needs RAs, if only for the default route.
Now, NetworkManager-0.9.4.0-9.git20120521.fc17.i686 is giving me IPv6
fits again.
RAs set the M bit. Here is radvdump (prefix altered):
#
# radvd configuration generated by radvdump 1.8.5
# based on Router Advertisement from fe80::862b:2bff:fe5a:191f
# received by interface em1
#
interface em1
{
AdvSendAdvert on;
# Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump
AdvManagedFlag on;
AdvOtherConfigFlag on;
AdvReachableTime 0;
AdvRetransTimer 0;
AdvCurHopLimit 64;
AdvDefaultLifetime 1800;
AdvHomeAgentFlag off;
AdvDefaultPreference medium;
AdvSourceLLAddress on;
# Prefix changed
prefix 2001:db8:dead:beef::/64
{
AdvValidLifetime 2592000;
AdvPreferredLifetime 604800;
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr off;
}; # End of prefix definition
}; # End of interface definition
But NM never sends the DHCP6 request, and ends up with:
em1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.9.34 netmask 255.255.255.0 broadcast
192.168.9.255
inet6 2001:db8:dead:beef:20c:f1ff:fed9:97b4 prefixlen 64
scopeid 0x0<global>
inet6 fe80::20c:f1ff:fed9:97b4 prefixlen 64 scopeid
0x20<link>
inet6 2001:db8:dead:beef:d979:aa8e:a917:b833 prefixlen 64
scopeid 0x0<global>
ether 00:0c:f1:d9:97:b4 txqueuelen 1000 (Ethernet)
RX packets 1110860 bytes 582055968 (555.0 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 690568 bytes 79404585 (75.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
But, I can run dhclient -6 -v manually, and it works fine:
Internet Systems Consortium DHCP Client 4.2.4-P1
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/
Bound to *:546
Listening on Socket/em1
Sending on Socket/em1
PRC: Confirming active lease (INIT-REBOOT).
XMT: Forming Confirm, 0 ms elapsed.
XMT: X-- IA_NA f1:d9:97:b4
XMT: | X-- Confirm Address 2001:db8:dead:beef::34
XMT: V IA_NA appended.
XMT: Confirm on em1, interval 1090ms.
RCV: Reply message on em1 from fe80::216:3eff:fe09:b3bd.
RCV: X-- Preference 255.
RCV: X-- Server ID: 00:01:00:01:17:03:9b:cb:00:16:3e:1b:96:d0
message status code Success: "All addresses still on link."
PRC: Bound to lease 00:01:00:01:17:03:9b:cb:00:16:3e:1b:96:d0.
And the interface does indeed have the DHCP address. Method in NM GUI
is set to Automatic.
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