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busybox: Support option 119 in udhcpc default script.

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* package/busybox/udhcpc.script: Use $search instead of $domain if
  that is defined.

Note that for this to work, not only has CONFIG_FEATURE_UDHCP_RFC3397
be enabled in Busybox' configuration but also the option has to be
requested using the "-O search" command-line option (one can set it in
CONFIG_IFUPDOWN_UDHCPC_CMD_OPTIONS, for instance).

[Peter: add comment with reference to rfc3359/option 119 for clarity]
Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Ignacy Gawędzki 2016-03-31 09:34:43 +02:00 committed by Peter Korsgaard
parent 66bdd08a82
commit d5e143dcfb
1 changed files with 10 additions and 1 deletions
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11
package/busybox/udhcpc.script
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@ -56,7 +56,16 @@ case "$1" in
cat $TMPFILE > $RESOLV_CONF
rm -f $TMPFILE
[ -n "$domain" ] && echo "search $domain # $interface" >> $RESOLV_CONF
# prefer rfc3359 domain search list (option 119) if available
if [ -n "$search" ]; then
search_list=$search
elif [ -n "$domain" ]; then
search_list=$domain
fi
[ -n "$search_list" ] &&
echo "search $search_list # $interface" >> $RESOLV_CONF
for i in $dns ; do
echo adding dns $i
echo "nameserver $i # $interface" >> $RESOLV_CONF