<para>Accepts the same key as <literal>[FooOverUDP]</literal></para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>IPv6RapidDeploymentPrefix=</varname></term>
+ <listitem>
+ <para>Reconfigure the tunnel for <ulink url="https://tools.ietf.org/html/rfc5569">IPv6 Rapid
+ Deployment</ulink>, also known as 6rd. The value is an ISP-specific IPv6 prefix with a non-zero length. Only
+ applicable to SIT tunnels.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
</example>
<example>
+ <title>/etc/systemd/network/25-6rd.netdev</title>
+ <programlisting>[NetDev]
+Name=6rd-tun
+Kind=sit
+MTUBytes=1480
+
+[Tunnel]
+Local=10.65.223.238
+IPv6RapidDeploymentPrefix=2602::/24</programlisting>
+ </example>
+
+ <example>
<title>/etc/systemd/network/25-gre.netdev</title>
<programlisting>[NetDev]
Name=gre-tun
Tunnel.FOUDestinationPort, config_parse_ip_port, 0, offsetof(Tunnel, fou_destination_port)
Tunnel.FOUSourcePort, config_parse_ip_port, 0, offsetof(Tunnel, encap_src_port)
Tunnel.Encapsulation, config_parse_fou_encap_type, 0, offsetof(Tunnel, fou_encap_type)
+Tunnel.IPv6RapidDeploymentPrefix, config_parse_6rd_prefix, 0, 0
FooOverUDP.Protocol, config_parse_uint8, 0, offsetof(FouTunnel, fou_protocol)
FooOverUDP.Encapsulation, config_parse_fou_encap_type, 0, offsetof(FouTunnel, fou_encap_type)
FooOverUDP.Port, config_parse_ip_port, 0, offsetof(FouTunnel, port)
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPTUN_PMTUDISC attribute: %m");
+ if (t->sixrd_prefixlen > 0) {
+ r = sd_netlink_message_append_in6_addr(m, IFLA_IPTUN_6RD_PREFIX, &t->sixrd_prefix);
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPTUN_6RD_PREFIX attribute: %m");
+ /* u16 is deliberate here, even though we're passing a netmask that can never be >128. The kernel is
+ * expecting to receive the prefixlen as a u16.
+ */
+ r = sd_netlink_message_append_u16(m, IFLA_IPTUN_6RD_PREFIXLEN, t->sixrd_prefixlen);
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPTUN_6RD_PREFIXLEN attribute: %m");
+ }
+
return r;
}
return 0;
}
+int config_parse_6rd_prefix(const char* unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+ Tunnel *t = userdata;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ union in_addr_union p;
+ uint8_t l;
+ int r;
+
+ r = in_addr_prefix_from_string(rvalue, AF_INET6, &p, &l);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse 6rd prefix \"%s\", ignoring: %m", rvalue);
+ return 0;
+ }
+ if (l == 0) {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "6rd prefix length of \"%s\" must be greater than zero, ignoring", rvalue);
+ return 0;
+ }
+
+ t->sixrd_prefix = p.in6;
+ t->sixrd_prefixlen = l;
+
+ return 0;
+}
+
static void ipip_init(NetDev *n) {
Tunnel *t = IPIP(n);
#include "in-addr-util.h"
+#include "conf-parser.h"
#include "netdev/netdev.h"
#include "netdev/fou-tunnel.h"
uint16_t encap_src_port;
uint16_t fou_destination_port;
+
+ struct in6_addr sixrd_prefix;
+ uint8_t sixrd_prefixlen;
} Tunnel;
DEFINE_NETDEV_CAST(IPIP, Tunnel);
unsigned section_line, const char *lvalue,
int ltype, const char *rvalue, void *data,
void *userdata);
+
+CONFIG_PARSER_PROTOTYPE(config_parse_6rd_prefix);