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f6eab3c3de
Setting encaplimit to a numerical value results into the value being
included as tunnel encapsulation limit in the destination option header
for tunneled packets.
Several users have reported interop issues as not all ISPs support the
destination option header containing the tunnel encapsulation limit
resulting into broken ds-lite connectivity.
Therefore drop the default encaplimit value for ds-lite tunnels so
no destination option header is included by default.
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
(backported from 1241707b40)
111 lines
2.4 KiB
Bash
111 lines
2.4 KiB
Bash
#!/bin/sh
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# dslite.sh - IPv4-in-IPv6 tunnel backend
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# Copyright (c) 2013 OpenWrt.org
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[ -n "$INCLUDE_ONLY" ] || {
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. /lib/functions.sh
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. /lib/functions/network.sh
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. ../netifd-proto.sh
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init_proto "$@"
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}
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proto_dslite_setup() {
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local cfg="$1"
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local iface="$2"
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local link="ds-$cfg"
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local remoteip6
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local mtu ttl peeraddr ip6addr tunlink zone weakif encaplimit
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json_get_vars mtu ttl peeraddr ip6addr tunlink zone weakif encaplimit
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[ -z "$peeraddr" ] && {
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proto_notify_error "$cfg" "MISSING_ADDRESS"
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proto_block_restart "$cfg"
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return
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}
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( proto_add_host_dependency "$cfg" "::" "$tunlink" )
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remoteip6=$(resolveip -6 "$peeraddr")
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if [ -z "$remoteip6" ]; then
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sleep 3
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remoteip6=$(resolveip -6 "$peeraddr")
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if [ -z "$remoteip6" ]; then
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proto_notify_error "$cfg" "AFTR_DNS_FAIL"
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return
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fi
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fi
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for ip6 in $remoteip6; do
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peeraddr=$ip6
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break
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done
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[ -z "$ip6addr" ] && {
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local wanif="$tunlink"
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if [ -z "$wanif" ] && ! network_find_wan6 wanif; then
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proto_notify_error "$cfg" "NO_WAN_LINK"
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return
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fi
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if ! network_get_ipaddr6 ip6addr "$wanif"; then
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[ -z "$weakif" ] && weakif="lan"
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if ! network_get_ipaddr6 ip6addr "$weakif"; then
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proto_notify_error "$cfg" "NO_WAN_LINK"
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return
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fi
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fi
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}
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proto_init_update "$link" 1
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proto_add_ipv4_route "0.0.0.0" 0
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proto_add_ipv4_address "192.0.0.2" "" "" "192.0.0.1"
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proto_add_tunnel
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json_add_string mode ipip6
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json_add_int mtu "${mtu:-1280}"
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json_add_int ttl "${ttl:-64}"
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json_add_string local "$ip6addr"
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json_add_string remote "$peeraddr"
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[ -n "$tunlink" ] && json_add_string link "$tunlink"
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json_add_object "data"
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[ -n "$encaplimit" ] && json_add_string encaplimit "$encaplimit"
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json_close_object
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proto_close_tunnel
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proto_add_data
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[ -n "$zone" ] && json_add_string zone "$zone"
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json_add_array firewall
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json_add_object ""
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json_add_string type nat
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json_add_string target ACCEPT
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json_close_object
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json_close_array
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proto_close_data
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proto_send_update "$cfg"
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}
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proto_dslite_teardown() {
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local cfg="$1"
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}
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proto_dslite_init_config() {
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no_device=1
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available=1
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proto_config_add_string "ip6addr"
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proto_config_add_string "peeraddr"
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proto_config_add_string "tunlink"
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proto_config_add_int "mtu"
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proto_config_add_int "ttl"
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proto_config_add_string "encaplimit"
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proto_config_add_string "zone"
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proto_config_add_string "weakif"
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}
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[ -n "$INCLUDE_ONLY" ] || {
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add_protocol dslite
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}
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