f35b0fae10
- Update to libvirt 6.6.0
- CVE-2020-14339
- Many incremental improvements and bug fixes, see
https://libvirt.org/news.html
OBS-URL: https://build.opensuse.org/request/show/824561
OBS-URL: https://build.opensuse.org/package/show/Virtualization/libvirt?expand=0&rev=834
52 lines
2.4 KiB
Diff
52 lines
2.4 KiB
Diff
From 15c7f9a6e7678238ef06f5d805984addb6f8bcdb Mon Sep 17 00:00:00 2001
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From: Martin Wilck <mwilck@suse.com>
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Date: Thu, 15 Dec 2016 10:17:05 +0100
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Subject: [PATCH] network: don't use dhcp-authoritative on static networks
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"Static" DHCP networks are those where no dynamic DHCP range is
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defined, only a list of host entries is used to serve permanent
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IP addresses. On such networks, we don't want dnsmasq to reply
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to other requests than those statically defined. But
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"dhcp-authoritative" will cause dnsmasq to do just that.
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Therefore we can't use "dhcp-authoritative" for static networks.
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Fixes: 4ac20b3ae "network: add dnsmasq option 'dhcp-authoritative'"
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Signed-off-by: Martin Wilck <mwilck@suse.com>
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---
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src/network/bridge_driver.c | 9 ++++++++-
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tests/networkxml2confdata/dhcp6host-routed-network.conf | 1 -
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2 files changed, 8 insertions(+), 2 deletions(-)
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Index: libvirt-6.6.0/src/network/bridge_driver.c
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===================================================================
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--- libvirt-6.6.0.orig/src/network/bridge_driver.c
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+++ libvirt-6.6.0/src/network/bridge_driver.c
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@@ -1448,7 +1448,14 @@ networkDnsmasqConfContents(virNetworkObj
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if (VIR_SOCKET_ADDR_IS_FAMILY(&ipdef->address, AF_INET)) {
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if (ipdef->nranges || ipdef->nhosts) {
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virBufferAddLit(&configbuf, "dhcp-no-override\n");
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- virBufferAddLit(&configbuf, "dhcp-authoritative\n");
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+ /*
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+ * Use "dhcp-authoritative" only for dynamic DHCP.
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+ * In a static-only network, it would cause dnsmasq
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+ * to reply to requests from other hosts than those
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+ * statically defined.
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+ */
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+ if (ipdef->nranges || !ipdef->nhosts)
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+ virBufferAddLit(&configbuf, "dhcp-authoritative\n");
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}
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if (ipdef->tftproot) {
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Index: libvirt-6.6.0/tests/networkxml2confdata/dhcp6host-routed-network.conf
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===================================================================
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--- libvirt-6.6.0.orig/tests/networkxml2confdata/dhcp6host-routed-network.conf
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+++ libvirt-6.6.0/tests/networkxml2confdata/dhcp6host-routed-network.conf
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@@ -10,7 +10,6 @@ bind-dynamic
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interface=virbr1
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dhcp-range=192.168.122.1,static
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dhcp-no-override
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-dhcp-authoritative
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dhcp-range=2001:db8:ac10:fd01::1,static,64
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dhcp-hostsfile=/var/lib/libvirt/dnsmasq/local.hostsfile
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addn-hosts=/var/lib/libvirt/dnsmasq/local.addnhosts
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