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Refactor IPv6 disable logic and add 'disable' option (#9326)

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Replaces previous IPv6 disabling method with a dedicated 'disable' option, storing sysctl settings in /etc/sysctl.d/99-disable-ipv6.conf. Updates build and install scripts to clarify the difference between 'none' (no assignment) and 'disable' (fully disables IPv6), adds user warnings, and disables IPv6 listeners in nginx if present.
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CanbiZ 2025-11-21 08:53:46 +01:00 • committed by GitHub
parent 636b0d3afd
commit 3f2f29d352
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3 changed files with 33 additions and 17 deletions
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13
misc/alpine-install.func
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@ -13,14 +13,17 @@ load_functions
verb_ip6() {
set_std_mode # Set STD mode based on VERBOSE
if [ "$IPV6_METHOD" == "none" ] || [ "$DISABLEIPV6" == "yes" ]; then
msg_info "Disabling IPv6"
if [ "$IPV6_METHOD" == "disable" ]; then
msg_info "Disabling IPv6 (this may affect some services)"
$STD sysctl -w net.ipv6.conf.all.disable_ipv6=1
$STD sysctl -w net.ipv6.conf.default.disable_ipv6=1
$STD sysctl -w net.ipv6.conf.lo.disable_ipv6=1
echo "net.ipv6.conf.all.disable_ipv6 = 1" >>/etc/sysctl.conf
echo "net.ipv6.conf.default.disable_ipv6 = 1" >>/etc/sysctl.conf
echo "net.ipv6.conf.lo.disable_ipv6 = 1" >>/etc/sysctl.conf
mkdir -p /etc/sysctl.d
$STD tee /etc/sysctl.d/99-disable-ipv6.conf >/dev/null <<EOF
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
EOF
$STD rc-update add sysctl default
msg_ok "Disabled IPv6"
fi