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authorYuxiang Zhu <vfreex@gmail.com>2022-11-14 10:23:46 +0800
committerYuxiang Zhu <vfreex@gmail.com>2022-11-14 11:04:05 +0800
commit00ec496877453cc37ceec0633821a47f128d9f4f (patch)
tree4fb0e69e87e37cca30451af6c06a83944486c2ad /src/etc/dhcp/dhclient-exit-hooks.d
parent61574eaf2d703e8084c8272e6976fd44abaea482 (diff)
downloadvyos-1x-00ec496877453cc37ceec0633821a47f128d9f4f.tar.gz
vyos-1x-00ec496877453cc37ceec0633821a47f128d9f4f.zip
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 `^$`, so those IPv4 related branches (like `BOUND`) could be mistakenly executed when an IPv6 reason (like `BOUND6`) is given.
Diffstat (limited to 'src/etc/dhcp/dhclient-exit-hooks.d')
-rw-r--r--src/etc/dhcp/dhclient-exit-hooks.d/01-vyos-cleanup4
-rw-r--r--src/etc/dhcp/dhclient-exit-hooks.d/vyatta-dhclient-hook6
2 files changed, 5 insertions, 5 deletions
diff --git a/src/etc/dhcp/dhclient-exit-hooks.d/01-vyos-cleanup b/src/etc/dhcp/dhclient-exit-hooks.d/01-vyos-cleanup
index ad6a1d5eb..da1bda137 100644
--- a/src/etc/dhcp/dhclient-exit-hooks.d/01-vyos-cleanup
+++ b/src/etc/dhcp/dhclient-exit-hooks.d/01-vyos-cleanup
@@ -8,7 +8,7 @@ hostsd_changes=
/usr/bin/systemctl -q is-active vyos-hostsd
hostsd_status=$?
-if [[ $reason =~ (EXPIRE|FAIL|RELEASE|STOP) ]]; then
+if [[ $reason =~ ^(EXPIRE|FAIL|RELEASE|STOP)$ ]]; then
if [[ $hostsd_status -eq 0 ]]; then
# delete search domains and nameservers via vyos-hostsd
logmsg info "Deleting search domains with tag \"dhcp-$interface\" via vyos-hostsd-client"
@@ -96,7 +96,7 @@ if [[ $reason =~ (EXPIRE|FAIL|RELEASE|STOP) ]]; then
fi
fi
-if [[ $reason =~ (EXPIRE6|RELEASE6|STOP6) ]]; then
+if [[ $reason =~ ^(EXPIRE6|RELEASE6|STOP6)$ ]]; then
if [[ $hostsd_status -eq 0 ]]; then
# delete search domains and nameservers via vyos-hostsd
logmsg info "Deleting search domains with tag \"dhcpv6-$interface\" via vyos-hostsd-client"
diff --git a/src/etc/dhcp/dhclient-exit-hooks.d/vyatta-dhclient-hook b/src/etc/dhcp/dhclient-exit-hooks.d/vyatta-dhclient-hook
index eeb8b0782..49bb18372 100644
--- a/src/etc/dhcp/dhclient-exit-hooks.d/vyatta-dhclient-hook
+++ b/src/etc/dhcp/dhclient-exit-hooks.d/vyatta-dhclient-hook
@@ -8,12 +8,12 @@
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
-#
+#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
-#
+#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2006, 2007, 2008 Vyatta, Inc.
# All Rights Reserved.
@@ -23,7 +23,7 @@
RUN="yes"
proto=""
-if [[ $reason =~ (REBOOT6|INIT6|EXPIRE6|RELEASE6|STOP6|INFORM6|BOUND6|REBIND6|DELEGATED6) ]]; then
+if [[ $reason =~ ^(REBOOT6|INIT6|EXPIRE6|RELEASE6|STOP6|INFORM6|BOUND6|REBIND6|DELEGATED6)$ ]]; then
proto="v6"
fi