From 00ec496877453cc37ceec0633821a47f128d9f4f Mon Sep 17 00:00:00 2001 From: Yuxiang Zhu Date: Mon, 14 Nov 2022 10:23:46 +0800 Subject: T4815: Fix various name server config issues 1. When a PPPoE session is connected, `pppd` will update `/etc/resolv.conf` regardless of `system name-server` option unless `no-peer-dns` is set. This is because `pppd` vendors scripts `/etc/ppp/ip-up.d/0000usepeerdns` and `/etc/ppp/ip-down.d/0000usepeerdns`, which updates `/etc/resolv.conf` on PPPoE connection and reverts the change on disconnection. This PR removes those scripts and adds custom scripts to update name server entries through `vyos-hostsd` instead. 2. There is a typo in `/etc/dhcp/dhclient-enter-hooks.d/04-vyos-resolvconf, which misspells variable name `new_dhcp6_name_servers` as `new_dhcpv6_name_servers`. This causes IPv6 name server entries in `vyos-hostsd` not updated when dhclient receives nameservers from DHCPv6. 3. Regular expressions in scripts under `/etc/dhcp/dhclient-enter-hooks.d` and `/etc/dhcp/dhclient-exit-hooks.d/` are not enclosed in `^$`, so those IPv4 related branches (like `BOUND`) could be mistakenly executed when an IPv6 reason (like `BOUND6`) is given. --- src/etc/ppp/ip-down.d/98-vyos-pppoe-cleanup-nameservers | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 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 100644 index 000000000..222c75f21 --- /dev/null +++ b/src/etc/ppp/ip-down.d/98-vyos-pppoe-cleanup-nameservers @@ -0,0 +1,15 @@ +#!/bin/bash +### Autogenerated by interfaces-pppoe.py ### + +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 -- cgit v1.2.3