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支持 ipv4 / ipv6 分别在不同的网卡

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bin456789
2024-06-12 22:40:22 +08:00
parent c5087bc0bd
commit d99fe2e480
6 changed files with 412 additions and 340 deletions
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148
alpine-network.sh
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@ -9,16 +9,6 @@ ipv6_addr=$4
ipv6_gateway=$5
is_in_china=$6
# 3.16-3.18 $device
# 3.19 $iface
# debian $iface
# shellcheck disable=SC2154
if [ -n "$iface" ]; then
ethx="$iface"
else
ethx="$device"
fi
if $is_in_china; then
ipv4_dns1='119.29.29.29'
ipv4_dns2='223.5.5.5'
@ -31,16 +21,27 @@ else
ipv6_dns2='2001:4860:4860::8888'
fi
# 找到主网卡
# debian 11 initrd 没有 xargs awk
# debian 12 initrd 没有 xargs
get_ethx() {
if false; then
ip -o link | grep "$mac_addr" | awk '{print $2}' | cut -d: -f1
else
ip -o link | grep "$mac_addr" | cut -d' ' -f2 | cut -d: -f1
fi
}
get_ipv4_gateway() {
# debian 11 initrd 没有 xargs awk
# debian 12 initrd 没有 xargs
ip -4 route show default | head -1 | cut -d ' ' -f3
ip -4 route show default dev "$ethx" | head -1 | cut -d ' ' -f3
}
get_ipv6_gateway() {
# debian 11 initrd 没有 xargs awk
# debian 12 initrd 没有 xargs
ip -6 route show default | head -1 | cut -d ' ' -f3
ip -6 route show default dev "$ethx" | head -1 | cut -d ' ' -f3
}
get_first_ipv4_addr() {
@ -87,24 +88,6 @@ is_have_ipv6() {
is_have_ipv6_addr && is_have_ipv6_gateway
}
# 开启 ethx
ip link set dev "$ethx" up
# 等待slaac
# 有ipv6地址就跳过，不管是slaac或者dhcpv6
# 因为会在trans里判断
# 这里等待5秒就够了，因为之前尝试获取dhcp6也用了一段时间
for i in $(seq 5 -1 0); do
is_have_ipv6 && break
echo "waiting slaac for ${i}s"
sleep 1
done
# 记录是否有动态地址
# 由于还没设置静态ip，所以有条目表示有动态地址
is_have_ipv4_addr && dhcpv4=true || dhcpv4=false
is_have_ipv6_addr && dhcpv6_or_slaac=true || dhcpv6_or_slaac=false
add_missing_ipv4_config() {
if [ -n "$ipv4_addr" ] && [ -n "$ipv4_gateway" ]; then
if ! is_have_ipv4_addr; then
@ -131,14 +114,6 @@ add_missing_ipv6_config() {
fi
}
# 设置静态地址，或者设置udhcpc无法设置的网关
add_missing_ipv4_config
add_missing_ipv6_config
# 检查 ipv4/ipv6 是否连接联网
ipv4_has_internet=false
ipv6_has_internet=false
is_need_test_ipv4() {
is_have_ipv4 && ! $ipv4_has_internet
}
@ -182,6 +157,79 @@ flush_ipv6_config() {
ip -6 route flush dev "$ethx"
}
# dhcp v4 /v6
# debian / kali
if [ -f /usr/share/debconf/confmodule ]; then
# shellcheck source=/dev/null
. /usr/share/debconf/confmodule
# 开启 ethx + dhcpv4/v6
ethx=$(get_ethx)
ip link set dev "$ethx" up
sleep 1
db_progress STEP 1
# dhcpv4
db_progress INFO netcfg/dhcp_progress
udhcpc -i "$ethx" -f -q -n || true
db_progress STEP 1
# slaac + dhcpv6
db_progress INFO netcfg/slaac_wait_title
# https://salsa.debian.org/installer-team/netcfg/-/blob/master/autoconfig.c#L148
cat <<EOF >/var/lib/netcfg/dhcp6c.conf
interface $ethx {
send ia-na 0;
request domain-name-servers;
request domain-name;
script "/lib/netcfg/print-dhcp6c-info";
};
id-assoc na 0 {
};
EOF
dhcp6c -c /var/lib/netcfg/dhcp6c.conf "$ethx"
sleep 10
# kill-all-dhcp
kill -9 "$(cat /var/run/dhcp6c.pid)"
db_progress STEP 1
# 静态 + 检测网络提示
db_subst netcfg/link_detect_progress interface "$ethx"
db_progress INFO netcfg/link_detect_progress
else
# alpine
ethx=$(get_ethx)
echo "$ethx"
ip link set dev "$ethx" up
sleep 1
udhcpc -i "$ethx" -f -q -n || true
udhcpc6 -i "$ethx" -f -q -n || true
fi
# 等待slaac
# 有ipv6地址就跳过，不管是slaac或者dhcpv6
# 因为会在trans里判断
# 这里等待5秒就够了，因为之前尝试获取dhcp6也用了一段时间
for i in $(seq 5 -1 0); do
is_have_ipv6 && break
echo "waiting slaac for ${i}s"
sleep 1
done
# 记录是否有动态地址
# 由于还没设置静态ip，所以有条目表示有动态地址
is_have_ipv4_addr && dhcpv4=true || dhcpv4=false
is_have_ipv6_addr && dhcpv6_or_slaac=true || dhcpv6_or_slaac=false
# 设置静态地址，或者设置udhcpc无法设置的网关
add_missing_ipv4_config
add_missing_ipv6_config
# 检查 ipv4/ipv6 是否连接联网
ipv4_has_internet=false
ipv6_has_internet=false
test_internet
# 处理云电脑 dhcp 获取的地址无法上网
@ -242,14 +290,16 @@ if $ipv6_has_internet && ! grep ':' /etc/resolv.conf; then
fi
# 传参给 trans.start
$dhcpv4 && echo 1 >/dev/dhcpv4 || echo 0 >/dev/dhcpv4
$should_disable_ra_slaac && echo 1 >/dev/should_disable_ra_slaac || echo 0 >/dev/should_disable_ra_slaac
$is_in_china && echo 1 >/dev/is_in_china || echo 0 >/dev/is_in_china
echo "$ethx" >/dev/ethx
echo "$mac_addr" >/dev/mac_addr
echo "$ipv4_addr" >/dev/ipv4_addr
echo "$ipv4_gateway" >/dev/ipv4_gateway
echo "$ipv6_addr" >/dev/ipv6_addr
echo "$ipv6_gateway" >/dev/ipv6_gateway
$ipv4_has_internet && echo 1 >/dev/ipv4_has_internet || echo 0 >/dev/ipv4_has_internet
$ipv6_has_internet && echo 1 >/dev/ipv6_has_internet || echo 0 >/dev/ipv6_has_internet
netconf="/dev/netconf/$ethx"
mkdir -p "$netconf"
$dhcpv4 && echo 1 >"$netconf/dhcpv4" || echo 0 >"$netconf/dhcpv4"
$should_disable_ra_slaac && echo 1 >"$netconf/should_disable_ra_slaac" || echo 0 >"$netconf/should_disable_ra_slaac"
$is_in_china && echo 1 >"$netconf/is_in_china" || echo 0 >"$netconf/is_in_china"
echo "$ethx" >"$netconf/ethx"
echo "$mac_addr" >"$netconf/mac_addr"
echo "$ipv4_addr" >"$netconf/ipv4_addr"
echo "$ipv4_gateway" >"$netconf/ipv4_gateway"
echo "$ipv6_addr" >"$netconf/ipv6_addr"
echo "$ipv6_gateway" >"$netconf/ipv6_gateway"
$ipv4_has_internet && echo 1 >"$netconf/ipv4_has_internet" || echo 0 >"$netconf/ipv4_has_internet"
$ipv6_has_internet && echo 1 >"$netconf/ipv6_has_internet" || echo 0 >"$netconf/ipv6_has_internet"