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| author | Jo-Philipp Wich <jow@openwrt.org> | 2011-06-12 18:59:40 +0000 |
|---|---|---|
| committer | Jo-Philipp Wich <jow@openwrt.org> | 2011-06-12 18:59:40 +0000 |
| commit | d3b8685cd79e04f6c215e13220b9ba8784ea7e0a (patch) | |
| tree | b402432823b280abe5eb2a24c98fda31f925184e | |
| parent | 01e7d775e79427108e1229008e28a5b76c2aa895 (diff) | |
| download | mtk-20170518-d3b8685cd79e04f6c215e13220b9ba8784ea7e0a.zip mtk-20170518-d3b8685cd79e04f6c215e13220b9ba8784ea7e0a.tar.gz mtk-20170518-d3b8685cd79e04f6c215e13220b9ba8784ea7e0a.tar.bz2 | |
6to4: don't start if detected local IPv4 address is RFC1918, allows people to deploy firmwares with 6to4 enabled by default
SVN-Revision: 27160
| -rw-r--r-- | package/6to4/Makefile | 2 | ||||
| -rwxr-xr-x | package/6to4/files/6to4.sh | 16 |
2 files changed, 16 insertions, 2 deletions
diff --git a/package/6to4/Makefile b/package/6to4/Makefile index c106570..a6f3315 100644 --- a/package/6to4/Makefile +++ b/package/6to4/Makefile @@ -8,7 +8,7 @@ include $(TOPDIR)/rules.mk PKG_NAME:=6to4 -PKG_VERSION:=3 +PKG_VERSION:=4 PKG_RELEASE:=1 include $(INCLUDE_DIR)/package.mk diff --git a/package/6to4/files/6to4.sh b/package/6to4/files/6to4.sh index 65f4ffa..6e85914 100755 --- a/package/6to4/files/6to4.sh +++ b/package/6to4/files/6to4.sh @@ -1,5 +1,5 @@ # 6to4.sh - IPv6-in-IPv4 tunnel backend -# Copyright (c) 2010 OpenWrt.org +# Copyright (c) 2010-2011 OpenWrt.org find_6to4_wanif() { local if=$(ip -4 r l e 0.0.0.0/0); if="${if#default* dev }"; if="${if%% *}" @@ -18,6 +18,15 @@ find_6to4_prefix() { printf "2002:%02x%02x:%02x%02x\n" $1 $2 $3 $4 } +test_6to4_rfc1918() +{ + local oIFS="$IFS"; IFS="."; set -- $1; IFS="$oIFS" + [ $1 -eq 10 ] && return 0 + [ $1 -eq 192 ] && [ $2 -eq 168 ] && return 0 + [ $1 -eq 172 ] && [ $2 -ge 16 ] && [ $2 -le 31 ] && return 0 + return 1 +} + set_6to4_radvd_interface() { local cfgid="$1" local lanif="${2:-lan}" @@ -136,6 +145,11 @@ setup_interface_6to4() { } } + test_6to4_rfc1918 "$local4" && { + logger -t "$link" "Local wan ip $local4 is private - aborting" + return + } + [ -n "$local4" ] && { logger -t "$link" "Starting ..." |