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libvirt/network-don-t-use-dhcp-authoritative-on-static-netwo.patch
James Fehlig 8188d60a2c Accepting request 1059454 from home:jfehlig:branches:Virtualization
- Update to libvirt 9.0.0
  - jsc#PED-620
  - Many incremental improvements and bug fixes, see
    https://libvirt.org/news.html#v9-0-0-2023-01-16
  - Added patches:
    ef482951-apparmor-Allow-umount-dev.patch

OBS-URL: https://build.opensuse.org/request/show/1059454
OBS-URL: https://build.opensuse.org/package/show/Virtualization/libvirt?expand=0&rev=963
2023-01-18 22:49:05 +00:00

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2.3 KiB
Diff

From ec5427d1007477b746dde3ba24b7951a6e14a3d7 Mon Sep 17 00:00:00 2001
From: Jim Fehlig <jfehlig@suse.com>
Date: Tue, 5 Jul 2022 11:19:41 -0600
Subject: network: don't use dhcp-authoritative on static networks
"Static" DHCP networks are those where no dynamic DHCP range is
defined, only a list of host entries is used to serve permanent
IP addresses. On such networks, we don't want dnsmasq to reply
to other requests than those statically defined. But
"dhcp-authoritative" will cause dnsmasq to do just that.
Therefore we can't use "dhcp-authoritative" for static networks.
Fixes: 4ac20b3ae "network: add dnsmasq option 'dhcp-authoritative'"
Signed-off-by: Martin Wilck <mwilck@suse.com>
---
src/network/bridge_driver.c | 9 ++++++++-
tests/networkxml2confdata/dhcp6host-routed-network.conf | 1 -
2 files changed, 8 insertions(+), 2 deletions(-)
Index: libvirt-9.0.0/src/network/bridge_driver.c
===================================================================
--- libvirt-9.0.0.orig/src/network/bridge_driver.c
+++ libvirt-9.0.0/src/network/bridge_driver.c
@@ -1044,7 +1044,14 @@ networkDnsmasqConfDHCP(virBuffer *buf,
if (VIR_SOCKET_ADDR_IS_FAMILY(&ipdef->address, AF_INET)) {
if (ipdef->nranges || ipdef->nhosts) {
virBufferAddLit(buf, "dhcp-no-override\n");
- virBufferAddLit(buf, "dhcp-authoritative\n");
+ /*
+ * Use "dhcp-authoritative" only for dynamic DHCP.
+ * In a static-only network, it would cause dnsmasq
+ * to reply to requests from other hosts than those
+ * statically defined.
+ */
+ if (ipdef->nranges || !ipdef->nhosts)
+ virBufferAddLit(buf, "dhcp-authoritative\n");
}
if (ipdef->bootfile) {
Index: libvirt-9.0.0/tests/networkxml2confdata/dhcp6host-routed-network.conf
===================================================================
--- libvirt-9.0.0.orig/tests/networkxml2confdata/dhcp6host-routed-network.conf
+++ libvirt-9.0.0/tests/networkxml2confdata/dhcp6host-routed-network.conf
@@ -10,7 +10,6 @@ bind-dynamic
interface=virbr1
dhcp-range=192.168.122.1,static
dhcp-no-override
-dhcp-authoritative
dhcp-range=2001:db8:ac10:fd01::1,static,64
dhcp-hostsfile=/var/lib/libvirt/dnsmasq/local.hostsfile
addn-hosts=/var/lib/libvirt/dnsmasq/local.addnhosts