From 806ff50bf1a970d731c2227f9d2cd2342b8a1b4e Mon Sep 17 00:00:00 2001 From: Christian Poessinger Date: Tue, 5 Apr 2022 09:00:42 +0200 Subject: dns: forwarding: T3804: bugfix DHCP name-servers used for recursion Commit 2ecf7a9f9c ('name-server: T3804: merge "system name-servers-dhcp" into "system name-server"') missed out an old dictionary key "system_name_server_dhcp" and thus system nameservers configured via DHCP did not get used for the DNS forwar recursor. --- src/conf_mode/dns_forwarding.py | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) (limited to 'src') diff --git a/src/conf_mode/dns_forwarding.py b/src/conf_mode/dns_forwarding.py index 23a16df63..98dc87ccd 100755 --- a/src/conf_mode/dns_forwarding.py +++ b/src/conf_mode/dns_forwarding.py @@ -1,6 +1,6 @@ #!/usr/bin/env python3 # -# Copyright (C) 2018-2020 VyOS maintainers and contributors +# Copyright (C) 2018-2022 VyOS maintainers and contributors # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2 or later as @@ -16,6 +16,7 @@ import os +from netifaces import interfaces from sys import exit from glob import glob @@ -65,10 +66,6 @@ def get_config(config=None): if conf.exists(base_nameservers): dns.update({'system_name_server': conf.return_values(base_nameservers)}) - base_nameservers_dhcp = ['system', 'name-servers-dhcp'] - if conf.exists(base_nameservers_dhcp): - dns.update({'system_name_server_dhcp': conf.return_values(base_nameservers_dhcp)}) - if 'authoritative_domain' in dns: dns['authoritative_zones'] = [] dns['authoritative_zone_errors'] = [] @@ -339,10 +336,15 @@ def apply(dns): hc.delete_name_server_tags_recursor(['system']) # add dhcp nameserver tags for configured interfaces - if 'system_name_server_dhcp' in dns: - for interface in dns['system_name_server_dhcp']: - hc.add_name_server_tags_recursor(['dhcp-' + interface, - 'dhcpv6-' + interface ]) + if 'system_name_server' in dns: + for interface in dns['system_name_server']: + # system_name_server key contains both IP addresses and interface + # names (DHCP) to use DNS servers. We need to check if the + # value is an interface name - only if this is the case, add the + # interface based DNS forwarder. + if interface in interfaces(): + hc.add_name_server_tags_recursor(['dhcp-' + interface, + 'dhcpv6-' + interface ]) # hostsd will generate the forward-zones file # the list and keys() are required as get returns a dict, not list -- cgit v1.2.3