>Number: 163144
>Category: conf
>Synopsis: There is no way to set nic's alias with both IPv4 and IPv6.
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Dec 09 07:10:02 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Isami Hanaoka
>Release: 9.0-RC2
>Organization:
Heart Solutions
>Environment:
FreeBSD minato.private 9.0-RC2 FreeBSD 9.0-RC2 #0: Sat Nov 12 18:35:25 UTC 2011
r...@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
In 9.0-RC2, RC3, "network.subr" uses "ifconfig_IF_aliasN" for alias
setting(both IPv4 and IPv6)
The function named "ifalias_ipv4_up" set IPv4's alias and the function named "if
alias_ipv6_up" set IPv6's alias.
However, the alias index number start from 0 in each function.
so there is no way to set nic's alias with both IPv4 and IPv6.
The only way is using backward compatibility method, such as
"ipv6_ifconfig_IF_aliasN".
But this method generate warning.
>How-To-Repeat:
see my rc.conf:
ifconfig_bge0="inet 192.168.252.170 netmask 255.255.255.0"
ifconfig_bge0_alias0="inet 192.168.253.171 netmask 255.255.255.255"
ifconfig_bge0_alias1="inet 192.168.253.172 netmask 255.255.255.255"
ifconfig_bge0_alias2="inet6 2400:XXXX:XXXX:0000::192.168.253.171 prefixlen 64"
ifconfig_bge0_alias3="inet6 2400:XXXX:XXXX:0000::192.168.253.172 prefixlen 64"
The function named "ifalias_ipv6_up" checks ifconfig_bge0_alias0 first, but
no such variables.
so, this function exit immediately and alias2 and alias3 are ignored.
>Fix:
Simple solution:
ipv4_alias_up ignores inet6 alias and
ipv6_alias_up ignores inet alias.
I dont know the solutions is best or not.
*** /etc/network.subr- 2011-12-09 15:33:47.471197003 +0900
--- /etc/network.subr 2011-12-09 15:34:43.810200121 +0900
***************
*** 707,712 ****
--- 707,714 ----
inet\ *)
ifconfig $1 ${ifconfig_args} alias && _ret=0
;;
+ inet6\ *)
+ ;;
"")
break
;;
***************
*** 733,738 ****
--- 735,742 ----
inet6\ *)
ifconfig $1 ${ifconfig_args} alias && _ret=0
;;
+ inet\ *)
+ ;;
"")
break
;;
>Release-Note:
>Audit-Trail:
>Unformatted:
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