Parahub AI
29070e95ef
Guest WiFi interface (phy0-ap0) may not be up when init script runs at boot. Move guest route addition to a background retry loop (up to 60s). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
80 lines
2.9 KiB
Bash
Executable File
80 lines
2.9 KiB
Bash
Executable File
#!/bin/sh /etc/rc.common
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# Parahub VPN Tunnel — Creates GRE6 tunnel over Yggdrasil for guest traffic
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# Runs after yggdrasil (START=95). OpenWrt 25.x lacks the netifd grev6 protocol
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# handler, so we create the tunnel manually with ip6gre.
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#
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# IMPORTANT: encaplimit must be "none" — Yggdrasil drops IPv6 packets with
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# Destination Options extension headers (added by default encaplimit 4).
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START=96
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STOP=10
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VPS_YGG="200:39f1:6a26:328a:d901:fbd2:d30d:faef"
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GRE_LOCAL_IP="172.16.0.2"
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GRE_GATEWAY="172.16.0.1"
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start() {
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# Only for Bumblebee role
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[ "$(cat /etc/parahub/role 2>/dev/null)" = "bumblebee" ] || return 0
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# Wait for Yggdrasil address (up to 60s)
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local ygg_addr="" attempts=0
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while [ $attempts -lt 30 ]; do
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ygg_addr=$(ip -6 addr show dev ygg0 scope global 2>/dev/null | awk '/inet6/{print $2}' | cut -d/ -f1 | head -1)
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[ -n "$ygg_addr" ] && break
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attempts=$((attempts + 1))
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sleep 2
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done
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if [ -z "$ygg_addr" ]; then
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logger -t parahub-vpn "No Yggdrasil address after 60s, skipping GRE6 tunnel"
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return 1
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fi
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# Create GRE6 tunnel (encaplimit none — critical for Yggdrasil compatibility)
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ip -6 tunnel add gre6-vpn mode ip6gre \
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remote "$VPS_YGG" \
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local "$ygg_addr" \
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encaplimit none
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ip addr add ${GRE_LOCAL_IP}/24 dev gre6-vpn
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ip link set gre6-vpn mtu 1400 up
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# Default route through GRE (table 100 — used by guest policy routing)
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ip route add default via "$GRE_GATEWAY" table 100
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# Guest subnet direct route in table 100 (background — WiFi may not be up yet)
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# Without this, router's own replies (source IP in guest subnet) go through
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# GRE instead of back to the guest client (ip rule matches source-based)
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local guest_subnet
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guest_subnet=$(awk -F= '/GUEST_SUBNET/{print $2}' /etc/parahub/keys 2>/dev/null)
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if [ -n "$guest_subnet" ]; then
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# WiFi interfaces take time to come up at boot — retry in background
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(
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local guest_dev="" ga=0
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while [ $ga -lt 30 ]; do
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guest_dev=$(ip route | grep "^${guest_subnet} " | awk '{print $3}')
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[ -n "$guest_dev" ] && break
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ga=$((ga + 1))
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sleep 2
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done
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if [ -n "$guest_dev" ]; then
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ip route add "$guest_subnet" dev "$guest_dev" table 100 2>/dev/null
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logger -t parahub-vpn "Guest route: $guest_subnet via $guest_dev in table 100"
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else
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logger -t parahub-vpn "Warning: guest device not found for $guest_subnet after 60s"
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fi
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) &
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fi
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# Reload firewall so vpn_tunnel zone picks up gre6-vpn device
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/etc/init.d/firewall reload 2>/dev/null &
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logger -t parahub-vpn "GRE6 tunnel up: ${GRE_LOCAL_IP} → ${VPS_YGG} via $ygg_addr (encaplimit none)"
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}
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stop() {
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ip route flush table 100 2>/dev/null
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ip -6 tunnel del gre6-vpn 2>/dev/null
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logger -t parahub-vpn "GRE6 tunnel down"
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}
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