IPv6 address autoconf 'create-global-addresses true' does not bite

[jovatn]

The yang/cli setting for autoconfiguring global addresses does not seem to bite.
I.e., the following will not give me a global address even when receiving router advertisements on eth0

root@infix-00-00-00:/config/> set interfaces interface eth0 ipv6 autoconf create-global-addresses true

A look in proc shows the following.

root@infix-00-00-00:~$ cat /proc/sys/net/ipv6/conf/eth0/autoconf 
0

Flipping it to "1" and taking eth0 down/up will give me the global address

root@infix-00-00-00:~$ echo 1 > /proc/sys/net/ipv6/conf/eth0/autoconf 
root@infix-00-00-00:~$ ip link set down dev eth0
root@infix-00-00-00:~$ ip link set up dev eth0
root@infix-00-00-00:~$ ip a show dev eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 02:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
    inet6 2001:db8:0:1:0:ff:fe00:0/64 scope global dynamic mngtmpaddr               <=======
       valid_lft 86399sec preferred_lft 14399sec
    inet6 fe80::ff:fe00:0/64 scope link 
       valid_lft forever preferred_lft forever
root@infix-00-00-00:~$ 

In this case I had a router advertising prefix 2001:db8:0:1::/64

linux-router # cat /etc/radvd.conf 
interface tap-infix
       {
               AdvSendAdvert on;
               prefix 2001:db8:0:1::/64
               {
                       AdvOnLink on;
                       AdvAutonomous on;
               };
       };

linux-router #

[troglobit]

Awesome report, thank you for taking the time to report it! I've noticed this myself but didn't put as much time into isolating it as you did. This will really save us a lot of time and help construct a Python regression test!