2018-04-13 10:09:40 +00:00
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From: Matthias Schiffer <mschiffer@universe-factory.net>
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Date: Thu, 12 Apr 2018 22:14:56 +0200
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Subject: kernel: disable accept_ra by default
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2018-04-17 20:23:26 +00:00
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Our commands setting accept_ra to 0 on all interfaces got lost in the
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transition to procd. This remained unnoticed for a long time, as we also
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2018-04-13 10:09:40 +00:00
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enable forwarding on all interfaces, which prevents RA handling by default.
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2018-04-17 20:23:26 +00:00
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Restore the commands, while also fixing a possible race condition in the
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old version.
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2018-04-13 10:09:40 +00:00
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Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
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2018-04-17 20:23:26 +00:00
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diff --git a/package/base-files/files/etc/init.d/sysctl b/package/base-files/files/etc/init.d/sysctl
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index 8722126a6612d67a3f615166a7fbec146207e97f..a236a0194b665ff56c8330930bfd44709d1b0d3d 100755
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--- a/package/base-files/files/etc/init.d/sysctl
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+++ b/package/base-files/files/etc/init.d/sysctl
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@@ -26,6 +26,14 @@ apply_defaults() {
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net.ipv6.ip6frag_high_thresh="$frag_high_thresh" \
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net.netfilter.nf_conntrack_frag6_low_thresh="$frag_low_thresh" \
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net.netfilter.nf_conntrack_frag6_high_thresh="$frag_high_thresh"
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+
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+ # first set default, then all interfaces to avoid races with appearing interfaces
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+ if [ -d /proc/sys/net/ipv6/conf ]; then
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+ echo 0 > /proc/sys/net/ipv6/conf/default/accept_ra
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+ for iface in /proc/sys/net/ipv6/conf/*/accept_ra; do
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+ echo 0 > "$iface"
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+ done
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+ fi
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}
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start() {
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