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authorhrs <hrs@FreeBSD.org>2009-09-26 18:59:00 +0000
committerhrs <hrs@FreeBSD.org>2009-09-26 18:59:00 +0000
commit5dd8a59580516caa7bd52947c6f58a129ae72d24 (patch)
tree4fd6be2cbcde7fce1d1bb9a1577d131c188540e1 /sbin
parent62c08fc4760665f6d4d8807b9c082f6c1dc2ec12 (diff)
downloadFreeBSD-src-5dd8a59580516caa7bd52947c6f58a129ae72d24.zip
FreeBSD-src-5dd8a59580516caa7bd52947c6f58a129ae72d24.tar.gz
Fix several logic bugs in the previous IPv6 variable change and
re-add $ipv6_enable support for backward compatibility. From UPDATING: 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF for IPv4. For aliases, $ifconfig_IF_aliasN should be used. Note that both variables need the "inet6" keyword at the head. Do not set $ipv6_network_interfaces manually if you do not understand what you are doing. It is not needed in most cases. $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but they are obsolete. 2. $ipv6_enable is obsolete. Use $ipv6_prefer and/or "inet6 accept_rtadv" keyword in ifconfig(8) instead. If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and all configured interfaces have "inet6 accept_rtadv" in the $ifconfig_IF_ipv6. These are for backward compatibility. 3. A new variable $ipv6_prefer has been added. If NO, IPv6 functionality of interfaces with no corresponding $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, and the default address selection policy of ip6addrctl(8) is the IPv4-preferred one (see rc.d/ip6addrctl for more details). Note that if you want to configure IPv6 functionality on the disabled interfaces after boot, first you need to clear the flag by using ifconfig(8) like: ifconfig em0 inet6 -ifdisabled If YES, the default address selection policy is set as IPv6-preferred. The default value of $ipv6_prefer is NO. 4. If your system need to receive Router Advertisement messages, define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) scripts automatically invoke rtsol(8) when the interface becomes UP. The Router Advertisement messages are used for SLAAC (State-Less Address AutoConfiguration).
Diffstat (limited to 'sbin')
-rw-r--r--sbin/ifconfig/ifconfig.812
1 files changed, 9 insertions, 3 deletions
diff --git a/sbin/ifconfig/ifconfig.8 b/sbin/ifconfig/ifconfig.8
index de241e7..220bd9f 100644
--- a/sbin/ifconfig/ifconfig.8
+++ b/sbin/ifconfig/ifconfig.8
@@ -28,7 +28,7 @@
.\" From: @(#)ifconfig.8 8.3 (Berkeley) 1/5/94
.\" $FreeBSD$
.\"
-.Dd September 2, 2009
+.Dd September 23, 2009
.Dt IFCONFIG 8
.Os
.Sh NAME
@@ -598,7 +598,10 @@ If the interface was reset when previously marked down,
the hardware will be re-initialized.
.El
.Pp
-The following parameters are for ICMPv6 Neightbor Discovery Protocol:
+The following parameters are for ICMPv6 Neightbor Discovery Protocol.
+Note that the address family keyword
+.Dq Li inet6
+is needed for them:
.Bl -tag -width indent
.It Cm accept_rtadv
Set a flag to enable accepting ICMPv6 Router Advertisement messages.
@@ -619,7 +622,10 @@ Clear a flag
.Cm defaultif .
.It Cm ifdisabled
Set a flag to disable all of IPv6 network communications on the
-specified interface.
+specified interface. Note that if there are already configured IPv6
+addresses on that interface, all of them are marked as
+.Dq tentative
+and DAD will be performed when this flag is cleared.
.It Cm -ifdisabled
Clear a flag
.Cm ifdisabled .
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