Hi, I sent this to the newsgroup, but it doesn't seem to have got
there, so I'm posting it here - sorry if it's posted twice
I needed some more flexibility for setting up my 6to4 tunnel
(which still doesn't work - argh!)
So I wrote this patch to /lib/rcscripts/net/ip6to4.sh. Note I know
hardly anything about Gentoo scripts, and little more about Bash
scripting - so please forgive any errors. Also, I'm sure some options
can be renamed/deleted/refactored/etc. so please don't hesitate to
share how they could be fixed. In particular, the 'suffix' variable
(i.e. what to add after 2002:XXXX:XXXX:) could be renamed? I didn't
know what to call it
Here's what's in my /etc/conf.d/net file:
link_6to4="ppp0"
config_6to4=( "ip6to4" )
suffix_6to4=:ff
relay_6to4=194.73.82.244 # 6to4.ipv6.bt.com
metric_6to4=16
RC_NEED_6to4="net.ppp0"
It gives me:
$ ip -6 addr
...
87: [EMAIL PROTECTED]: <NOARP,UP,10000> mtu 1480
inet6 2002:5991:d010::ff/16 scope global
valid_lft forever preferred_lft forever
inet6 ::89.145.208.16/128 scope global
valid_lft forever preferred_lft forever
$ ip -6 route
...
2000::/3 via ::194.73.82.244 dev 6to4 metric 1 expires
21323996sec (null) 1480 ssthresh 1420 advmss 4294967295
...
Obviously, leaving out any of the options make them default to
their original values. Did I do that right in the script? As
I said, I'm not really that much into bash scripting, so I'd
gladly accept criticism.
-------------------------cut here-------------------------
--- .ip6to4-orig.sh 2006-12-05 18:16:23.000000000 +0000
+++ ip6to4.sh 2006-12-06 00:58:31.000000000 +0000
@@ -3,6 +3,7 @@
# Distributed under the terms of the GNU General Public License v2
# Contributed by Roy Marples ([EMAIL PROTECTED])
+# Additions by Asfand Yar Qazi ([EMAIL PROTECTED])
# void ip6to4_depend(void)
#
@@ -16,7 +17,7 @@
#
# Expose variables that can be configured
ip6to4_expose() {
- variables link
+ variables link suffix relay metric
}
# bool ip6to4_start(char *interface)
@@ -40,7 +41,29 @@
eerror "link_${ifvar} is not set"
return 1
fi
-
+
+ local suffix="suffix_${ifvar}"
+ if [[ -z ${!suffix} ]] ; then
+ suffix=:1
+ else
+ suffix=${!suffix}
+ fi
+
+ local relay="relay_${ifvar}"
+ if [[ -z ${!relay} ]] ; then
+ relay="192.88.99.1"
+ else
+ relay=${!relay}
+ fi
+
+ # metric is 1 by default?!
+ local metric="metric_${ifvar}"
+ if [[ ${!metric} -eq 1 ]] ; then
+ metric="2147483647"
+ else
+ metric=${!metric}
+ fi
+
interface_exists "${!host}" true || return 1
# An interface can have more than 1 ip address
@@ -66,7 +89,8 @@
[[ ${i} -lt 32 ]] && continue
veinfo "IPv4 address on ${!host}: ${ip}"
- local ip6=$(printf "2002:%02x%02x:%02x%02x::1" ${ip//./ })
+ # local ip6=$(printf "2002:%02x%02x:%02x%02x::1" ${ip//./ } )
+ local ip6=$(printf "2002:%02x%02x:%02x%02x:%s"
${ip//./ } ${suffix} )
veinfo "Derived IPv6 address: ${ip6}"
# Now apply our IPv6 address to our config
@@ -89,8 +113,10 @@
# Add a route for us, ensuring we don't delete anything else
local routes="[EMAIL PROTECTED]"
+ # eval "routes_${ifvar}=( \"\${!routes}\" \
+ # \"2003::/3 via ::192.88.99.1 metric 2147483647\" )"
eval "routes_${ifvar}=( \"\${!routes}\" \
- \"2003::/3 via ::192.88.99.1 metric 2147483647\" )"
+ \"2003::/3 via ::${relay} metric ${metric}\" )"
}
# vim:ts=4
-------------------------cut here-------------------------
--
[email protected] mailing list
