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kernel: disable accept_ra by default

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Our commands setting accept_ra to 0 on all interfaces got lost in the
transition to procd. This remained unnoticed for a long time, as we also
enable forwarding on all interfaces, which prevents RA handling by default.

Restore the commands, while also fixing a possible race condition in the
old version.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
This commit is contained in:
Matthias Schiffer 2018-04-12 22:14:56 +02:00
parent 030a23001b
commit bb46520159
No known key found for this signature in database
GPG key ID: 16EF3F64CB201D9C
2 changed files with 9 additions and 1 deletions
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2
package/base-files/Makefile
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@ -12,7 +12,7 @@ include $(INCLUDE_DIR)/version.mk
include $(INCLUDE_DIR)/feeds.mk
PKG_NAME:=base-files
PKG_RELEASE:=189
PKG_RELEASE:=190
PKG_FLAGS:=nonshared
PKG_FILE_DEPENDS:=$(PLATFORM_DIR)/ $(GENERIC_PLATFORM_DIR)/base-files/

8
package/base-files/files/etc/init.d/sysctl
View file

@ -26,6 +26,14 @@ apply_defaults() {
net.ipv6.ip6frag_high_thresh="$frag_high_thresh" \
net.netfilter.nf_conntrack_frag6_low_thresh="$frag_low_thresh" \
net.netfilter.nf_conntrack_frag6_high_thresh="$frag_high_thresh"
# first set default, then all interfaces to avoid races with appearing interfaces
if [ -d /proc/sys/net/ipv6/conf ]; then
echo 0 > /proc/sys/net/ipv6/conf/default/accept_ra
for iface in /proc/sys/net/ipv6/conf/*/accept_ra; do
echo 0 > "$iface"
done
fi
}
start() {