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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.
This commit is contained in:
CanbiZ
2025-11-21 08:53:46 +01:00
committed by GitHub
parent 636b0d3afd
commit 3f2f29d352
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