Now that we have support for IPv6 in the iptables helpers, and a new
option in the XML schema, we can wire up support for it in the network
driver.
Signed-off-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
---
src/network/bridge_driver_linux.c | 23 +-
.../nat-ipv6-masquerade-linux.args | 228 ++++++++++++++++++
.../nat-ipv6-masquerade.xml | 17 ++
tests/networkxml2firewalltest.c | 1 +
4 files changed, 262 insertions(+), 7 deletions(-)
create mode 100644 tests/networkxml2firewalldata/nat-ipv6-masquerade-linux.args
create mode 100644 tests/networkxml2firewalldata/nat-ipv6-masquerade.xml
diff --git a/src/network/bridge_driver_linux.c b/src/network/bridge_driver_linux.c
index b0bd207250..fcb3803965 100644
--- a/src/network/bridge_driver_linux.c
+++ b/src/network/bridge_driver_linux.c
@@ -307,7 +307,8 @@ int networkCheckRouteCollision(virNetworkDefPtr def)
return ret;
}
-static const char networkLocalMulticast[] = "224.0.0.0/24";
+static const char networkLocalMulticastIPv4[] = "224.0.0.0/24";
+static const char networkLocalMulticastIPv6[] = "ffx2::/16";
static const char networkLocalBroadcast[] = "255.255.255.255/32";
static int
@@ -317,6 +318,7 @@ networkAddMasqueradingFirewallRules(virFirewallPtr fw,
{
int prefix = virNetworkIPDefPrefix(ipdef);
const char *forwardIf = virNetworkDefForwardIf(def, 0);
+ bool isIPv4 = VIR_SOCKET_ADDR_IS_FAMILY(&ipdef->address, AF_INET);
if (prefix < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
@@ -406,7 +408,8 @@ networkAddMasqueradingFirewallRules(virFirewallPtr fw,
return -1;
/* exempt local network broadcast address as destination */
- if (iptablesAddDontMasquerade(fw,
+ if (isIPv4 &&
+ iptablesAddDontMasquerade(fw,
&ipdef->address,
prefix,
forwardIf,
@@ -418,7 +421,8 @@ networkAddMasqueradingFirewallRules(virFirewallPtr fw,
&ipdef->address,
prefix,
forwardIf,
- networkLocalMulticast) < 0)
+ isIPv4 ? networkLocalMulticastIPv4 :
+ networkLocalMulticastIPv6) < 0)
return -1;
return 0;
@@ -431,6 +435,7 @@ networkRemoveMasqueradingFirewallRules(virFirewallPtr fw,
{
int prefix = virNetworkIPDefPrefix(ipdef);
const char *forwardIf = virNetworkDefForwardIf(def, 0);
+ bool isIPv4 = VIR_SOCKET_ADDR_IS_FAMILY(&ipdef->address, AF_INET);
if (prefix < 0)
return 0;
@@ -439,10 +444,12 @@ networkRemoveMasqueradingFirewallRules(virFirewallPtr fw,
&ipdef->address,
prefix,
forwardIf,
- networkLocalMulticast) < 0)
+ isIPv4 ? networkLocalMulticastIPv4 :
+ networkLocalMulticastIPv6) < 0)
return -1;
- if (iptablesRemoveDontMasquerade(fw,
+ if (isIPv4 &&
+ iptablesRemoveDontMasquerade(fw,
&ipdef->address,
prefix,
forwardIf,
@@ -769,7 +776,8 @@ networkAddIPSpecificFirewallRules(virFirewallPtr fw,
*/
if (def->forward.type == VIR_NETWORK_FORWARD_NAT) {
- if (VIR_SOCKET_ADDR_IS_FAMILY(&ipdef->address, AF_INET))
+ if (VIR_SOCKET_ADDR_IS_FAMILY(&ipdef->address, AF_INET) ||
+ def->forward.natIPv6 == VIR_TRISTATE_BOOL_YES)
return networkAddMasqueradingFirewallRules(fw, def, ipdef);
else if (VIR_SOCKET_ADDR_IS_FAMILY(&ipdef->address, AF_INET6))
return networkAddRoutingFirewallRules(fw, def, ipdef);
@@ -786,7 +794,8 @@ networkRemoveIPSpecificFirewallRules(virFirewallPtr fw,
virNetworkIPDefPtr ipdef)
{
if (def->forward.type == VIR_NETWORK_FORWARD_NAT) {
- if (VIR_SOCKET_ADDR_IS_FAMILY(&ipdef->address, AF_INET))
+ if (VIR_SOCKET_ADDR_IS_FAMILY(&ipdef->address, AF_INET) ||
+ def->forward.natIPv6 == VIR_TRISTATE_BOOL_YES)
return networkRemoveMasqueradingFirewallRules(fw, def, ipdef);
else if (VIR_SOCKET_ADDR_IS_FAMILY(&ipdef->address, AF_INET6))
return networkRemoveRoutingFirewallRules(fw, def, ipdef);
diff --git a/tests/networkxml2firewalldata/nat-ipv6-masquerade-linux.args b/tests/networkxml2firewalldata/nat-ipv6-masquerade-linux.args
new file mode 100644
index 0000000000..4ba4c3da30
--- /dev/null
+++ b/tests/networkxml2firewalldata/nat-ipv6-masquerade-linux.args
@@ -0,0 +1,228 @@
+iptables \
+--table filter \
+--insert LIBVIRT_INP \
+--in-interface virbr0 \
+--protocol tcp \
+--destination-port 67 \
+--jump ACCEPT
+iptables \
+--table filter \
+--insert LIBVIRT_INP \
+--in-interface virbr0 \
+--protocol udp \
+--destination-port 67 \
+--jump ACCEPT
+iptables \
+--table filter \
+--insert LIBVIRT_OUT \
+--out-interface virbr0 \
+--protocol tcp \
+--destination-port 68 \
+--jump ACCEPT
+iptables \
+--table filter \
+--insert LIBVIRT_OUT \
+--out-interface virbr0 \
+--protocol udp \
+--destination-port 68 \
+--jump ACCEPT
+iptables \
+--table filter \
+--insert LIBVIRT_INP \
+--in-interface virbr0 \
+--protocol tcp \
+--destination-port 53 \
+--jump ACCEPT
+iptables \
+--table filter \
+--insert LIBVIRT_INP \
+--in-interface virbr0 \
+--protocol udp \
+--destination-port 53 \
+--jump ACCEPT
+iptables \
+--table filter \
+--insert LIBVIRT_OUT \
+--out-interface virbr0 \
+--protocol tcp \
+--destination-port 53 \
+--jump ACCEPT
+iptables \
+--table filter \
+--insert LIBVIRT_OUT \
+--out-interface virbr0 \
+--protocol udp \
+--destination-port 53 \
+--jump ACCEPT
+iptables \
+--table filter \
+--insert LIBVIRT_FWO \
+--in-interface virbr0 \
+--jump REJECT
+iptables \
+--table filter \
+--insert LIBVIRT_FWI \
+--out-interface virbr0 \
+--jump REJECT
+iptables \
+--table filter \
+--insert LIBVIRT_FWX \
+--in-interface virbr0 \
+--out-interface virbr0 \
+--jump ACCEPT
+ip6tables \
+--table filter \
+--insert LIBVIRT_FWO \
+--in-interface virbr0 \
+--jump REJECT
+ip6tables \
+--table filter \
+--insert LIBVIRT_FWI \
+--out-interface virbr0 \
+--jump REJECT
+ip6tables \
+--table filter \
+--insert LIBVIRT_FWX \
+--in-interface virbr0 \
+--out-interface virbr0 \
+--jump ACCEPT
+ip6tables \
+--table filter \
+--insert LIBVIRT_INP \
+--in-interface virbr0 \
+--protocol tcp \
+--destination-port 53 \
+--jump ACCEPT
+ip6tables \
+--table filter \
+--insert LIBVIRT_INP \
+--in-interface virbr0 \
+--protocol udp \
+--destination-port 53 \
+--jump ACCEPT
+ip6tables \
+--table filter \
+--insert LIBVIRT_OUT \
+--out-interface virbr0 \
+--protocol tcp \
+--destination-port 53 \
+--jump ACCEPT
+ip6tables \
+--table filter \
+--insert LIBVIRT_OUT \
+--out-interface virbr0 \
+--protocol udp \
+--destination-port 53 \
+--jump ACCEPT
+ip6tables \
+--table filter \
+--insert LIBVIRT_INP \
+--in-interface virbr0 \
+--protocol udp \
+--destination-port 547 \
+--jump ACCEPT
+ip6tables \
+--table filter \
+--insert LIBVIRT_OUT \
+--out-interface virbr0 \
+--protocol udp \
+--destination-port 546 \
+--jump ACCEPT
+iptables \
+--table filter \
+--insert LIBVIRT_FWO \
+--source 192.168.122.0/24 \
+--in-interface virbr0 \
+--jump ACCEPT
+iptables \
+--table filter \
+--insert LIBVIRT_FWI \
+--destination 192.168.122.0/24 \
+--out-interface virbr0 \
+--match conntrack \
+--ctstate ESTABLISHED,RELATED \
+--jump ACCEPT
+iptables \
+--table nat \
+--insert LIBVIRT_PRT \
+--source 192.168.122.0/24 '!' \
+--destination 192.168.122.0/24 \
+--jump MASQUERADE
+iptables \
+--table nat \
+--insert LIBVIRT_PRT \
+--source 192.168.122.0/24 \
+-p udp '!' \
+--destination 192.168.122.0/24 \
+--jump MASQUERADE \
+--to-ports 1024-65535
+iptables \
+--table nat \
+--insert LIBVIRT_PRT \
+--source 192.168.122.0/24 \
+-p tcp '!' \
+--destination 192.168.122.0/24 \
+--jump MASQUERADE \
+--to-ports 1024-65535
+iptables \
+--table nat \
+--insert LIBVIRT_PRT \
+--source 192.168.122.0/24 \
+--destination 255.255.255.255/32 \
+--jump RETURN
+iptables \
+--table nat \
+--insert LIBVIRT_PRT \
+--source 192.168.122.0/24 \
+--destination 224.0.0.0/24 \
+--jump RETURN
+ip6tables \
+--table filter \
+--insert LIBVIRT_FWO \
+--source 2001:db8:ca2:2::/64 \
+--in-interface virbr0 \
+--jump ACCEPT
+ip6tables \
+--table filter \
+--insert LIBVIRT_FWI \
+--destination 2001:db8:ca2:2::/64 \
+--out-interface virbr0 \
+--match conntrack \
+--ctstate ESTABLISHED,RELATED \
+--jump ACCEPT
+ip6tables \
+--table nat \
+--insert LIBVIRT_PRT \
+--source 2001:db8:ca2:2::/64 '!' \
+--destination 2001:db8:ca2:2::/64 \
+--jump MASQUERADE
+ip6tables \
+--table nat \
+--insert LIBVIRT_PRT \
+--source 2001:db8:ca2:2::/64 \
+-p udp '!' \
+--destination 2001:db8:ca2:2::/64 \
+--jump MASQUERADE \
+--to-ports 1024-65535
+ip6tables \
+--table nat \
+--insert LIBVIRT_PRT \
+--source 2001:db8:ca2:2::/64 \
+-p tcp '!' \
+--destination 2001:db8:ca2:2::/64 \
+--jump MASQUERADE \
+--to-ports 1024-65535
+ip6tables \
+--table nat \
+--insert LIBVIRT_PRT \
+--source 2001:db8:ca2:2::/64 \
+--destination ffx2::/16 \
+--jump RETURN
+iptables \
+--table mangle \
+--insert LIBVIRT_PRT \
+--out-interface virbr0 \
+--protocol udp \
+--destination-port 68 \
+--jump CHECKSUM \
+--checksum-fill
diff --git a/tests/networkxml2firewalldata/nat-ipv6-masquerade.xml b/tests/networkxml2firewalldata/nat-ipv6-masquerade.xml
new file mode 100644
index 0000000000..03bcc8c67d
--- /dev/null
+++ b/tests/networkxml2firewalldata/nat-ipv6-masquerade.xml
@@ -0,0 +1,17 @@
+<network>
+ <name>default</name>
+ <bridge name="virbr0"/>
+ <forward>
+ <nat ipv6="yes"/>
+ </forward>
+ <ip address="192.168.122.1" netmask="255.255.255.0">
+ <dhcp>
+ <range start="192.168.122.2" end="192.168.122.254"/>
+ </dhcp>
+ </ip>
+ <ip family="ipv6" address="2001:db8:ca2:2::1" prefix="64" >
+ <dhcp>
+ <range start="2001:db8:ca2:2:1::10" end="2001:db8:ca2:2:1::ff" />
+ </dhcp>
+ </ip>
+</network>
diff --git a/tests/networkxml2firewalltest.c b/tests/networkxml2firewalltest.c
index 0ad5e2303b..697bfd7e03 100644
--- a/tests/networkxml2firewalltest.c
+++ b/tests/networkxml2firewalltest.c
@@ -173,6 +173,7 @@ mymain(void)
DO_TEST("nat-many-ips");
DO_TEST("nat-no-dhcp");
DO_TEST("nat-ipv6");
+ DO_TEST("nat-ipv6-masquerade");
DO_TEST("route-default");
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
--
2.26.2
