From ff901a52bb9acd4bdd0e3a96033c896e4667a6af Mon Sep 17 00:00:00 2001
From: Yuxiang Zhu <vfreex@gmail.com>
Date: Mon, 14 Nov 2022 10:23:46 +0800
Subject: backport: T4815: Fix various name server config issues

This is a backport of https://github.com/vyos/vyos-1x/pull/1656.

Note I also changed `ip-down.script.tmpl` to not wait for `systemctl
stop dhcp6c@$iface.service`, because that command is slow and pppd will
kill the ip-down script if it times out.

I didn't see `ip-down.script.tmpl` or its equivalent in the 1.4 branch.
Not sure if there is another mechanism to handle that functionality or
it is missed.
---
 src/etc/ppp/ip-down.d/98-vyos-pppoe-cleanup-nameservers | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100755 src/etc/ppp/ip-down.d/98-vyos-pppoe-cleanup-nameservers

(limited to 'src/etc/ppp/ip-down.d')

diff --git a/src/etc/ppp/ip-down.d/98-vyos-pppoe-cleanup-nameservers b/src/etc/ppp/ip-down.d/98-vyos-pppoe-cleanup-nameservers
new file mode 100755
index 000000000..5157469f4
--- /dev/null
+++ b/src/etc/ppp/ip-down.d/98-vyos-pppoe-cleanup-nameservers
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+interface=$6
+if [ -z "$interface" ]; then
+    exit
+fi
+
+if ! /usr/bin/systemctl -q is-active vyos-hostsd; then
+    exit  # vyos-hostsd is not running
+fi
+
+hostsd_client="/usr/bin/vyos-hostsd-client"
+$hostsd_client --delete-name-servers --tag "dhcp-$interface"
+$hostsd_client --apply
-- 
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