ipv6_addrs_IF aliases in rc.conf(5)

[Łukasz Wąsikowski]

W dniu 2012-12-22 18:14, Ben Morrow pisze:
> Quoth =?UTF-8?B?xYF1a2FzeiBXxIVzaWtvd3NraQ==?= <lukasz at wasikowski.net>:
>> W dniu 2012-12-22 04:41, Kimmo Paasiala pisze:
>>
>>> Yeah, this is problem in network.subr. An interface is not recognized
>>> as IPv6 capable if the interface is not in "ipv6_network_interfaces"
>>> and there's no "ifconfig_IF_ipv6" in rc.conf(5), bummer. For IPv4 it
>>> "just works" because the interface is always assumed to be IPv4
>>> capable.
>>
>> Ok, I used ifconfig_em0_ipv6="up" and it worked. So it looks like this:
> 
> The documented way to do this is to just set the link-local address in
> ifconfig_IF_ipv6, since an interface is required to have a link-local
> address. Either configure an fe80:: address explicitly or set
> 
>     ifconfig_em0_ipv6="inet6 auto_linklocal"
> 
> Alternatively, if you set ipv6_activate_all_interfaces all interfaces
> will be considered IPv6-capable.

link-local address is assigned by default, even with ifconfig_IF_ipv6="up".

root at freebsd:~ # grep -Ev '^[[:space:]]*#|^$' /etc/rc.conf ; ifconfig
em0 | grep -E '^[[:space:]]*inet6' | head -2
hostname="freebsd"
ifconfig_em0="up"
ipv4_addrs_em0="192.168.168.20-24/24"
defaultrouter="192.168.168.1"
ipv6_network_interfaces="em0"
ipv6_defaultrouter="2001:6a0:1cb::ffff"
ifconfig_em0_ipv6="up"
ipv6_addrs_em0="2001:6a0:1cb::1-e/128"
sshd_enable="YES"
dumpdev="NO"
named_enable="YES"
        inet6 fe80::a00:27ff:fe02:8371%em0 prefixlen 64 scopeid 0x1
        inet6 2001:6a0:1cb::1 prefixlen 128

Of course using "inet6 auto_linklocal" instead of "up" seems a better
way to do it, thank you for this tip.

-- 
best regards,
Lukasz Wasikowski