Re: ipv6_addrs_IF aliases in rc.conf(5)
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Hiroki Sato <hrs@freebsd.org> wrote
in <20130718.123323.1730389945845032580.hrs@allbsd.org>:
hr> Michael Grimm <trashcan@odo.in-berlin.de> wrote
hr> in <EB3C4472-02BF-4415-BB2D-B4929063D796@odo.in-berlin.de>:
hr>
hr> tr> On 12.07.2013, at 09:03, Hiroki Sato <hrs@FreeBSD.org> wrote:
hr> tr>
hr> tr> > Please let me know if the existing configurations and/or the new
hr> tr> > formats do not work.
hr> tr>
hr> tr> First of all: great work! It is that much easier to deal with aliases, now.
hr> tr>
hr> tr> There is only one minor issue, if at all:
hr> tr>
hr> tr> rc.conf:
hr> tr> | ifconfig_em0_ipv6="inet6 dead:beef:1111:2222::1 prefixlen 56"
hr> tr> | ifconfig_em0_aliases="\
hr> tr> | inet6 dead:beef:1111:2222::2-3 prefixlen 56 \
hr> tr> | inet6 dead:beef:1111:2222::4 prefixlen 56 \
hr> tr> | inet6 dead:beef:1111:2222::5-6/56"
hr> tr>
hr> tr> ifconfig:
hr> tr> | inet6 dead:beef:1111:2222::1 prefixlen 56
hr> tr> | inet6 dead:beef:1111:2222::2 prefixlen 64
hr> tr> | inet6 dead:beef:1111:2222::3 prefixlen 64
hr> tr> | inet6 dead:beef:1111:2222::4 prefixlen 56
hr> tr> | inet6 dead:beef:1111:2222::5 prefixlen 56
hr> tr> | inet6 dead:beef:1111:2222::6 prefixlen 56
hr> tr>
hr> tr> Any combination of a range definition (2-3) *and* "prefixlen 56" is ignored
hr> tr> whereas a range definition (5-6) *and* "/56" is interpreted as wanted.
hr> tr>
hr> tr> Well, that combination of a range and "prefix" isn't documented, thus I am
hr> tr> not sure if that's an issue or a feature?
hr>
hr> It seems a bug. Thank you for your report. I am investigating it now.
Can you test the attached patch? The old version (in stable/9 now)
does not support "address range spec + options" properly and ignore
the options part.
The attached patch accepts options and treats "netmask" for inet and
"prefixlen" in inet6 in a reasonable way so that the specified
options do not conflict with the default /NN values.
-- Hiroki
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Index: etc/network.subr
===================================================================
--- etc/network.subr (revision 253489)
+++ etc/network.subr (working copy)
@@ -721,9 +721,14 @@
#
ifalias_expand_addr()
{
+ local _af _action
- afexists $1 || return
- ifalias_expand_addr_$1 $2 $3
+ _af=$1
+ _action=$2
+ shift 2
+
+ afexists $_af || return
+ ifalias_expand_addr_$_af $_action $*
}
# ifalias_expand_addr_inet action addr
@@ -731,19 +736,31 @@
#
ifalias_expand_addr_inet()
{
- local _action _arg _cidr _cidr_addr
+ local _action _arg _cidr _cidr_addr _exargs
local _ipaddr _plen _range _iphead _iptail _iplow _iphigh _ipcount
local _retstr _c
_action=$1
_arg=$2
+ shift 2
+ _exargs=$*
_retstr=
- case $_action:$_arg in
+ case $_action:$_arg:$_exargs in
*:*--*) return ;; # invalid
- tmp:*) echo $_arg && return ;; # already expanded
- tmp:*-*) _action="alias" ;; # to be expanded
- *:*-*) ;; # to be expanded
- *:*) echo inet $_arg && return ;; # already expanded
+ tmp:*:*netmask*) # already expanded w/ netmask option
+ echo ${_arg%/[0-9]*} $_exargs && return
+ ;;
+ tmp:*:*) # already expanded w/o netmask option
+ echo $_arg $_exargs && return
+ ;;
+ tmp:*[0-9]-[0-9]*:*) _action="alias" ;; # to be expanded
+ *:*[0-9]-[0-9]*:*) ;; # to be expanded
+ *:*:*netmask*) # already expanded w/ netmask option
+ echo inet ${_arg%/[0-9]*} $_exargs && return
+ ;;
+ *:*:*) # already expanded w/o netmask option
+ echo inet $_arg $_exargs && return
+ ;;
esac
for _cidr in $_arg; do
@@ -796,7 +813,7 @@
done
for _c in $_retstr; do
- ifalias_expand_addr_inet $_action $_c
+ ifalias_expand_addr_inet $_action $_c $_exargs
done
}
@@ -805,20 +822,32 @@
#
ifalias_expand_addr_inet6()
{
- local _action _arg _cidr _cidr_addr
+ local _action _arg _cidr _cidr_addr _exargs
local _ipaddr _plen _ipleft _ipright _iplow _iphigh _ipcount
local _ipv4part
local _retstr _c
_action=$1
_arg=$2
+ shift 2
+ _exargs=$*
_retstr=
- case $_action:$_arg in
- *:*--*) return ;; # invalid
- tmp:*) echo $_arg && return ;;
- tmp:*-*) _action="alias" ;;
- *:*-*) ;;
- *:*) echo inet6 $_arg && return ;;
+ case $_action:$_arg:$_exargs in
+ *:*--*:*) return ;; # invalid
+ tmp:*:*prefixlen*) # already expanded w/ prefixlen option
+ echo ${_arg%/[0-9]*} $_exargs && return
+ ;;
+ tmp:*:*) # already expanded w/o prefixlen option
+ echo $_arg $_exargs && return
+ ;;
+ tmp:*[0-9a-zA-Z]-[0-9a-zA-Z]*:*)_action="alias" ;;# to be expanded
+ *:*[0-9a-zA-Z]-[0-9a-zA-Z]*:*) ;; # to be expanded
+ *:*:*prefixlen*) # already expanded w/ prefixlen option
+ echo inet6 ${_arg%/[0-9]*} $_exargs && return
+ ;;
+ *:*:*) # already expanded w/o prefixlen option
+ echo inet6 $_arg $_exargs && return
+ ;;
esac
for _cidr in $_arg; do
@@ -872,7 +901,7 @@
fi
for _c in $_retstr; do
- ifalias_expand_addr_inet6 $_action $_c
+ ifalias_expand_addr_inet6 $_action $_c $_exargs
done
else
# v4mapped/v4compat should handle as an IPv4 alias
@@ -888,7 +917,7 @@
_retstr=`ifalias_expand_addr_inet \
tmp ${_ipv4part}${_plen:+/}${_plen}`
for _c in $_retstr; do
- ifalias_expand_addr_inet $_action $_c
+ ifalias_expand_addr_inet $_action $_c $_exargs
done
fi
done
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