Bug: Changing Stateless Autoconfigured IPv6 Address to Static
rslaranjo at gmail.com
Wed Apr 22 15:14:40 UTC 2009
I need help. My box(Machine1) by default will perform IPv6 stateless
autoconfiguration and I need to change this autoconfigured address to static
manually without restarting.
Here are the steps I follow but I sure I missed something cause I was
unsuccessful of doing it.
1. I disabled sysctl knob to stop receiving rtadv
# sysctl -w net.inet6.ip6.accept_rtadv=0
2. I then removed the autoconfigured ipv6 address from the interface
# ifconfig em0 inet6 2001:db8:1234:abcd:20c:27ff:fe3d:63dd delete
3. I removed the default ipv6 route since I will replace with another route
# route delete -inet6 default
4. I then added the autoconfigured ipv6 address back to the interface to
make it static
# ifconfig em0 inet6 2001:db8:1234:abcd:20c:27ff:fe3d:63dd prefixlen 64 up
5. I added the new default ipv6 route
# route add -inet6 default 2001:db8:1234:abcd::1
At this point I pinged 2001:db8:1234:abcd:20c:27ff:fe3d:63dd from another
IPv6 box (Machine2) with IPv6 address of the same prefix
(2001:db8:1234:abcd:215:d3ff:fe4f:acaf) but with now success. But if I ping6
from Machine2 to may router 2001:db8:1234:abcd::1 I am successfull.
I tried to check IPv6 route information from Machine1 thru netstat -rnf
but have not found this entry:
2001:db8:1234:abcd::/64 link#1 UC
I hope someone could shed light on how to put this route into my ipv6
Is this a bug in FreeBSD not automatically add this route after adding an
IPv6 address with this prefix?
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