Description of problem:
NetworkManager does not configure the IPv6 default route properly. It makes a default route to a device. As I understand, this is only useful on a point-to-point connnection. Instead it should make a default route through a via <IP-address>.

Version-Release number of selected component (if applicable):
NetworkManager-0.8.2-8.git20101117.f15

How reproducible:
Everytime

Steps to Reproduce:
1. Install Fedora using static IPv6 routing
2. Try to ping6 a host outside the local subnet
  
Results:
/etc/sysconfig/network-scripts/ifcfg-pci10p1

IPV6_DEFAULTGW="2001:838:3ab:1::1"
IPV6INIT="yes"
NM_CONTROLLED="yes"
DNS1="2001:838:3ab:1::1"
IPV6_AUTOCONF="no"
DEVICE="pci10p1"
IPV6ADDR="2001:838:3ab:1::12/64"
ONBOOT="yes"
HWADDR=00:26:18:F1:92:4E
TYPE=Ethernet
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME="System pci10p1"
UUID=bff46ec1-50db-b49a-80d1-782e6761c691
LAST_CONNECT=1298731988

# ip -6 route show

2001:838:3ab:1::/64 dev pci10p1  proto kernel  metric 256 
unreachable fe80::/64 dev lo  proto kernel  metric 256  error -101
fe80::/64 dev pci10p1  proto kernel  metric 256 
default dev pci10p1  proto static  metric 1024 

This is the situation after booting into the system. Now ping6 a host outside the subnet and see that it doesn't ping.

Next do:

# ip -6 route del ::/0 dev pci10p1

# ip -6 route add ::/0 via 2001:838:3ab:1::1

# ip -6 route show

2001:838:375:2::1 via 2001:838:3ab:1::1 dev pci10p1  metric 0 
    cache 
2001:838:3ab:1::/64 dev pci10p1  proto kernel  metric 256 
unreachable fe80::/64 dev lo  proto kernel  metric 256  error -101
fe80::/64 dev pci10p1  proto kernel  metric 256 
default via 2001:838:3ab:1::1 dev pci10p1  metric 1024 

After this reconfiguration do a ping6 to the host outside the subnet and see that the ping is responded.

This shows that NetworkManager should configure routing as in the later example.


Additional info: