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-rw-r--r--lib/packets.c123
-rw-r--r--lib/packets.h10
-rw-r--r--ovn/northd/ovn-northd.c145
-rw-r--r--ovn/ovn-nb.xml56
-rw-r--r--tests/ovn.at24
5 files changed, 296 insertions, 62 deletions
diff --git a/lib/packets.c b/lib/packets.c
index d82341d71..daca1b3dd 100644
--- a/lib/packets.c
+++ b/lib/packets.c
@@ -425,29 +425,29 @@ ip_parse(const char *s, ovs_be32 *ip)
}
/* Parses string 's', which must be an IP address with an optional netmask or
- * CIDR prefix length. Stores the IP address into '*ip' and the netmask into
- * '*mask'. (If 's' does not contain a netmask, 255.255.255.255 is
- * assumed.)
+ * CIDR prefix length. Stores the IP address into '*ip', netmask into '*mask',
+ * (255.255.255.255, if 's' lacks a netmask), and number of scanned characters
+ * into '*n'.
*
* Returns NULL if successful, otherwise an error message that the caller must
* free(). */
char * OVS_WARN_UNUSED_RESULT
-ip_parse_masked(const char *s, ovs_be32 *ip, ovs_be32 *mask)
+ip_parse_masked_len(const char *s, int *n, ovs_be32 *ip,
+ ovs_be32 *mask)
{
int prefix;
- int n;
- if (ovs_scan(s, IP_SCAN_FMT"/"IP_SCAN_FMT"%n",
- IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask), &n) && !s[n]) {
+ if (ovs_scan_len(s, n, IP_SCAN_FMT"/"IP_SCAN_FMT,
+ IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask))) {
/* OK. */
- } else if (ovs_scan(s, IP_SCAN_FMT"/%d%n", IP_SCAN_ARGS(ip), &prefix, &n)
- && !s[n]) {
+ } else if (ovs_scan_len(s, n, IP_SCAN_FMT"/%d",
+ IP_SCAN_ARGS(ip), &prefix)) {
if (prefix <= 0 || prefix > 32) {
return xasprintf("%s: network prefix bits not between 0 and "
"32", s);
}
*mask = be32_prefix_mask(prefix);
- } else if (ip_parse(s, ip)) {
+ } else if (ovs_scan_len(s, n, IP_SCAN_FMT, IP_SCAN_ARGS(ip))) {
*mask = OVS_BE32_MAX;
} else {
return xasprintf("%s: invalid IP address", s);
@@ -455,15 +455,33 @@ ip_parse_masked(const char *s, ovs_be32 *ip, ovs_be32 *mask)
return NULL;
}
-/* Similar to ip_parse_masked(), but the mask, if present, must be a CIDR mask
- * and is returned as a prefix length in '*plen'. */
+/* This function is similar to ip_parse_masked_len(), but doesn't return the
+ * number of scanned characters and expects 's' to end after the ip/(optional)
+ * mask.
+ *
+ * Returns NULL if successful, otherwise an error message that the caller must
+ * free(). */
char * OVS_WARN_UNUSED_RESULT
-ip_parse_cidr(const char *s, ovs_be32 *ip, unsigned int *plen)
+ip_parse_masked(const char *s, ovs_be32 *ip, ovs_be32 *mask)
+{
+ int n = 0;
+
+ char *error = ip_parse_masked_len(s, &n, ip, mask);
+ if (!error && s[n]) {
+ return xasprintf("%s: invalid IP address", s);
+ }
+ return error;
+}
+
+/* Similar to ip_parse_masked_len(), but the mask, if present, must be a CIDR
+ * mask and is returned as a prefix len in '*plen'. */
+char * OVS_WARN_UNUSED_RESULT
+ip_parse_cidr_len(const char *s, int *n, ovs_be32 *ip, unsigned int *plen)
{
ovs_be32 mask;
char *error;
- error = ip_parse_masked(s, ip, &mask);
+ error = ip_parse_masked_len(s, n, ip, &mask);
if (error) {
return error;
}
@@ -475,6 +493,21 @@ ip_parse_cidr(const char *s, ovs_be32 *ip, unsigned int *plen)
return NULL;
}
+/* Similar to ip_parse_cidr_len(), but doesn't return the number of scanned
+ * characters and expects 's' to be NULL terminated at the end of the
+ * ip/(optional) cidr. */
+char * OVS_WARN_UNUSED_RESULT
+ip_parse_cidr(const char *s, ovs_be32 *ip, unsigned int *plen)
+{
+ int n = 0;
+
+ char *error = ip_parse_cidr_len(s, &n, ip, plen);
+ if (!error && s[n]) {
+ return xasprintf("%s: invalid IP address", s);
+ }
+ return error;
+}
+
/* Parses string 's', which must be an IPv6 address. Stores the IPv6 address
* into '*ip'. Returns true if successful, otherwise false. */
bool
@@ -485,49 +518,65 @@ ipv6_parse(const char *s, struct in6_addr *ip)
/* Parses string 's', which must be an IPv6 address with an optional netmask or
* CIDR prefix length. Stores the IPv6 address into '*ip' and the netmask into
- * '*mask'. (If 's' does not contain a netmask, all-one-bits is assumed.)
+ * '*mask' (if 's' does not contain a netmask, all-one-bits is assumed), and
+ * number of scanned characters into '*n'.
*
* Returns NULL if successful, otherwise an error message that the caller must
* free(). */
char * OVS_WARN_UNUSED_RESULT
-ipv6_parse_masked(const char *s, struct in6_addr *ip, struct in6_addr *mask)
+ipv6_parse_masked_len(const char *s, int *n, struct in6_addr *ip,
+ struct in6_addr *mask)
{
char ipv6_s[IPV6_SCAN_LEN + 1];
int prefix;
- int n;
- if (ovs_scan(s, IPV6_SCAN_FMT"%n", ipv6_s, &n) && ipv6_parse(ipv6_s, ip)) {
- s += n;
- if (!*s) {
- *mask = in6addr_exact;
- } else if (ovs_scan(s, "/%d%n", &prefix, &n) && !s[n]) {
+ if (ovs_scan_len(s, n, " "IPV6_SCAN_FMT, ipv6_s)
+ && ipv6_parse(ipv6_s, ip)) {
+ if (ovs_scan_len(s, n, "/%d", &prefix)) {
if (prefix <= 0 || prefix > 128) {
return xasprintf("%s: IPv6 network prefix bits not between 0 "
"and 128", s);
}
*mask = ipv6_create_mask(prefix);
- } else if (ovs_scan(s, "/"IPV6_SCAN_FMT"%n", ipv6_s, &n)
- && !s[n]
- && ipv6_parse(ipv6_s, mask)) {
+ } else if (ovs_scan_len(s, n, "/"IPV6_SCAN_FMT, ipv6_s)) {
+ if (!ipv6_parse(ipv6_s, mask)) {
+ return xasprintf("%s: Invalid IPv6 mask", s);
+ }
/* OK. */
} else {
- return xasprintf("%s: syntax error expecting IPv6 prefix length "
- "or mask", s);
+ /* OK. No mask. */
+ *mask = in6addr_exact;
}
return NULL;
}
return xasprintf("%s: invalid IPv6 address", s);
}
-/* Similar to ipv6_parse_masked(), but the mask, if present, must be a CIDR
+/* This function is similar to ipv6_parse_masked_len(), but doesn't return the
+ * number of scanned characters and expects 's' to end following the
+ * ipv6/(optional) mask. */
+char * OVS_WARN_UNUSED_RESULT
+ipv6_parse_masked(const char *s, struct in6_addr *ip, struct in6_addr *mask)
+{
+ int n = 0;
+
+ char *error = ipv6_parse_masked_len(s, &n, ip, mask);
+ if (!error && s[n]) {
+ return xasprintf("%s: invalid IPv6 address", s);
+ }
+ return error;
+}
+
+/* Similar to ipv6_parse_masked_len(), but the mask, if present, must be a CIDR
* mask and is returned as a prefix length in '*plen'. */
char * OVS_WARN_UNUSED_RESULT
-ipv6_parse_cidr(const char *s, struct in6_addr *ip, unsigned int *plen)
+ipv6_parse_cidr_len(const char *s, int *n, struct in6_addr *ip,
+ unsigned int *plen)
{
struct in6_addr mask;
char *error;
- error = ipv6_parse_masked(s, ip, &mask);
+ error = ipv6_parse_masked_len(s, n, ip, &mask);
if (error) {
return error;
}
@@ -539,6 +588,20 @@ ipv6_parse_cidr(const char *s, struct in6_addr *ip, unsigned int *plen)
return NULL;
}
+/* Similar to ipv6_parse_cidr_len(), but doesn't return the number of scanned
+ * characters and expects 's' to end after the ipv6/(optional) cidr. */
+char * OVS_WARN_UNUSED_RESULT
+ipv6_parse_cidr(const char *s, struct in6_addr *ip, unsigned int *plen)
+{
+ int n = 0;
+
+ char *error = ipv6_parse_cidr_len(s, &n, ip, plen);
+ if (!error && s[n]) {
+ return xasprintf("%s: invalid IPv6 address", s);
+ }
+ return error;
+}
+
/* Stores the string representation of the IPv6 address 'addr' into the
* character array 'addr_str', which must be at least INET6_ADDRSTRLEN
* bytes long. */
diff --git a/lib/packets.h b/lib/packets.h
index f1445deea..bf12937b1 100644
--- a/lib/packets.h
+++ b/lib/packets.h
@@ -594,6 +594,11 @@ char *ip_parse_masked(const char *s, ovs_be32 *ip, ovs_be32 *mask)
OVS_WARN_UNUSED_RESULT;
char *ip_parse_cidr(const char *s, ovs_be32 *ip, unsigned int *plen)
OVS_WARN_UNUSED_RESULT;
+char *ip_parse_masked_len(const char *s, int *n, ovs_be32 *ip, ovs_be32 *mask)
+ OVS_WARN_UNUSED_RESULT;
+char *ip_parse_cidr_len(const char *s, int *n, ovs_be32 *ip,
+ unsigned int *plen)
+ OVS_WARN_UNUSED_RESULT;
#define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
#define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
@@ -1041,6 +1046,11 @@ char *ipv6_parse_masked(const char *s, struct in6_addr *ipv6,
struct in6_addr *mask);
char *ipv6_parse_cidr(const char *s, struct in6_addr *ip, unsigned int *plen)
OVS_WARN_UNUSED_RESULT;
+char *ipv6_parse_masked_len(const char *s, int *n, struct in6_addr *ipv6,
+ struct in6_addr *mask);
+char *ipv6_parse_cidr_len(const char *s, int *n, struct in6_addr *ip,
+ unsigned int *plen)
+ OVS_WARN_UNUSED_RESULT;
void *eth_compose(struct dp_packet *, const struct eth_addr eth_dst,
const struct eth_addr eth_src, uint16_t eth_type,
diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c
index e6271cff8..b2b1a45cc 100644
--- a/ovn/northd/ovn-northd.c
+++ b/ovn/northd/ovn-northd.c
@@ -914,6 +914,112 @@ ovn_lflow_destroy(struct hmap *lflows, struct ovn_lflow *lflow)
}
}
+struct ipv4_netaddr {
+ ovs_be32 addr;
+ unsigned int plen;
+};
+
+struct ipv6_netaddr {
+ struct in6_addr addr;
+ unsigned int plen;
+};
+
+struct lport_addresses {
+ struct eth_addr ea;
+ size_t n_ipv4_addrs;
+ struct ipv4_netaddr *ipv4_addrs;
+ size_t n_ipv6_addrs;
+ struct ipv6_netaddr *ipv6_addrs;
+};
+
+/*
+ * Extracts the mac, ipv4 and ipv6 addresses from the input param 'address'
+ * which should be of the format 'MAC [IP1 IP2 ..]" where IPn should be
+ * a valid IPv4 or IPv6 address and stores them in the 'ipv4_addrs' and
+ * 'ipv6_addrs' fields of input param 'laddrs'.
+ * The caller has to free the 'ipv4_addrs' and 'ipv6_addrs' fields.
+ * If input param 'store_ipv6' is true only then extracted ipv6 addresses
+ * are stored in 'ipv6_addrs' fields.
+ * Return true if at least 'MAC' is found in 'address', false otherwise.
+ * Eg 1.
+ * If 'address' = '00:00:00:00:00:01 10.0.0.4 fe80::ea2a:eaff:fe28:3390/64
+ * 30.0.0.3/23' and 'store_ipv6' = true
+ * then returns true with laddrs->n_ipv4_addrs = 2, naddrs->n_ipv6_addrs = 1.
+ *
+ * Eg. 2
+ * If 'address' = '00:00:00:00:00:01 10.0.0.4 fe80::ea2a:eaff:fe28:3390/64
+ * 30.0.0.3/23' and 'store_ipv6' = false
+ * then returns true with laddrs->n_ipv4_addrs = 2, naddrs->n_ipv6_addrs = 0.
+ *
+ * Eg 3. If 'address' = '00:00:00:00:00:01 10.0.0.4 addr 30.0.0.4', then
+ * returns true with laddrs->n_ipv4_addrs = 1 and laddrs->n_ipv6_addrs = 0.
+ */
+static bool
+extract_lport_addresses(char *address, struct lport_addresses *laddrs,
+ bool store_ipv6)
+{
+ char *buf = address;
+ int buf_index = 0;
+ char *buf_end = buf + strlen(address);
+ if (!ovs_scan_len(buf, &buf_index, ETH_ADDR_SCAN_FMT,
+ ETH_ADDR_SCAN_ARGS(laddrs->ea))) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ VLOG_INFO_RL(&rl, "invalid syntax '%s' in address. No MAC address"
+ " found", address);
+ return false;
+ }
+
+ ovs_be32 ip4;
+ struct in6_addr ip6;
+ unsigned int plen;
+ char *error;
+
+ laddrs->n_ipv4_addrs = 0;
+ laddrs->n_ipv6_addrs = 0;
+ laddrs->ipv4_addrs = NULL;
+ laddrs->ipv6_addrs = NULL;
+
+ /* Loop through the buffer and extract the IPv4/IPv6 addresses
+ * and store in the 'laddrs'. Break the loop if invalid data is found.
+ */
+ buf += buf_index;
+ while (buf < buf_end) {
+ buf_index = 0;
+ error = ip_parse_cidr_len(buf, &buf_index, &ip4, &plen);
+ if (!error) {
+ laddrs->n_ipv4_addrs++;
+ laddrs->ipv4_addrs = xrealloc(
+ laddrs->ipv4_addrs,
+ sizeof (struct ipv4_netaddr) * laddrs->n_ipv4_addrs);
+ laddrs->ipv4_addrs[laddrs->n_ipv4_addrs - 1].addr = ip4;
+ laddrs->ipv4_addrs[laddrs->n_ipv4_addrs - 1].plen = plen;
+ buf += buf_index;
+ continue;
+ }
+ free(error);
+ error = ipv6_parse_cidr_len(buf, &buf_index, &ip6, &plen);
+ if (!error && store_ipv6) {
+ laddrs->n_ipv6_addrs++;
+ laddrs->ipv6_addrs = xrealloc(
+ laddrs->ipv6_addrs,
+ sizeof(struct ipv6_netaddr) * laddrs->n_ipv6_addrs);
+ memcpy(&laddrs->ipv6_addrs[laddrs->n_ipv6_addrs - 1].addr, &ip6,
+ sizeof(struct in6_addr));
+ laddrs->ipv6_addrs[laddrs->n_ipv6_addrs - 1].plen = plen;
+ }
+
+ if (error) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ VLOG_INFO_RL(&rl, "invalid syntax '%s' in address", address);
+ free(error);
+ break;
+ }
+ buf += buf_index;
+ }
+
+ return true;
+}
+
/* Appends port security constraints on L2 address field 'eth_addr_field'
* (e.g. "eth.src" or "eth.dst") to 'match'. 'port_security', with
* 'n_port_security' elements, is the collection of port_security constraints
@@ -1194,14 +1300,15 @@ build_lswitch_flows(struct hmap *datapaths, struct hmap *ports,
}
for (size_t i = 0; i < op->nbs->n_addresses; i++) {
- struct eth_addr ea;
- ovs_be32 ip;
-
- if (ovs_scan(op->nbs->addresses[i],
- ETH_ADDR_SCAN_FMT" "IP_SCAN_FMT,
- ETH_ADDR_SCAN_ARGS(ea), IP_SCAN_ARGS(&ip))) {
+ struct lport_addresses laddrs;
+ if (!extract_lport_addresses(op->nbs->addresses[i], &laddrs,
+ false)) {
+ continue;
+ }
+ for (size_t j = 0; j < laddrs.n_ipv4_addrs; j++) {
char *match = xasprintf(
- "arp.tpa == "IP_FMT" && arp.op == 1", IP_ARGS(ip));
+ "arp.tpa == "IP_FMT" && arp.op == 1",
+ IP_ARGS(laddrs.ipv4_addrs[j].addr));
char *actions = xasprintf(
"eth.dst = eth.src; "
"eth.src = "ETH_ADDR_FMT"; "
@@ -1213,14 +1320,16 @@ build_lswitch_flows(struct hmap *datapaths, struct hmap *ports,
"outport = inport; "
"inport = \"\"; /* Allow sending out inport. */ "
"output;",
- ETH_ADDR_ARGS(ea),
- ETH_ADDR_ARGS(ea),
- IP_ARGS(ip));
+ ETH_ADDR_ARGS(laddrs.ea),
+ ETH_ADDR_ARGS(laddrs.ea),
+ IP_ARGS(laddrs.ipv4_addrs[j].addr));
ovn_lflow_add(lflows, op->od, S_SWITCH_IN_L2_LKUP, 150,
match, actions);
free(match);
free(actions);
}
+
+ free(laddrs.ipv4_addrs);
}
}
@@ -1541,12 +1650,14 @@ build_lrouter_flows(struct hmap *datapaths, struct hmap *ports,
/* XXX ARP for neighboring router */
} else if (op->od->n_router_ports) {
for (size_t i = 0; i < op->nbs->n_addresses; i++) {
- struct eth_addr ea;
- ovs_be32 ip;
+ struct lport_addresses laddrs;
+ if (!extract_lport_addresses(op->nbs->addresses[i], &laddrs,
+ false)) {
+ continue;
+ }
- if (ovs_scan(op->nbs->addresses[i],
- ETH_ADDR_SCAN_FMT" "IP_SCAN_FMT,
- ETH_ADDR_SCAN_ARGS(ea), IP_SCAN_ARGS(&ip))) {
+ for (size_t k = 0; k < laddrs.n_ipv4_addrs; k++) {
+ ovs_be32 ip = laddrs.ipv4_addrs[k].addr;
for (size_t j = 0; j < op->od->n_router_ports; j++) {
/* Get the Logical_Router_Port that the Logical_Port is
* connected to, as 'peer'. */
@@ -1574,7 +1685,7 @@ build_lrouter_flows(struct hmap *datapaths, struct hmap *ports,
"outport = %s; "
"output;",
ETH_ADDR_ARGS(peer->mac),
- ETH_ADDR_ARGS(ea),
+ ETH_ADDR_ARGS(laddrs.ea),
peer->json_key);
ovn_lflow_add(lflows, peer->od,
S_ROUTER_IN_ARP, 200, match, actions);
@@ -1583,6 +1694,8 @@ build_lrouter_flows(struct hmap *datapaths, struct hmap *ports,
break;
}
}
+
+ free(laddrs.ipv4_addrs);
}
}
}
diff --git a/ovn/ovn-nb.xml b/ovn/ovn-nb.xml
index c3b493424..dbd7bbbbd 100644
--- a/ovn/ovn-nb.xml
+++ b/ovn/ovn-nb.xml
@@ -271,12 +271,12 @@
</p>
<dl>
- <dt><code><var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var></code></dt>
+ <dt><code>Ethernet address followed by zero or more IPv4 or IPv6 addresses (or both)</code></dt>
<dd>
<p>
- An Ethernet address owned by the logical port. Like a physical
- Ethernet NIC, a logical port ordinarily has a single fixed
- Ethernet address.
+ An Ethernet address defined is owned by the logical port.
+ Like a physical Ethernet NIC, a logical port ordinarily has
+ a single fixed Ethernet address.
</p>
<p>
@@ -286,27 +286,53 @@
if a MAC learning process had learned that MAC address on the
port.
</p>
- </dd>
- <dt><code><var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var> <var>a</var>.<var>b</var>.<var>c</var>.<var>d</var></code></dt>
- <dd>
<p>
- This form has all the effects of the previous form. It also
- indicates that the logical port owns the given IPv4 address.
+ If IPv4 or IPv6 address(es) (or both) are defined, it indicates
+ that the logical port owns the given IP addresses.
</p>
<p>
- The OVN logical switch uses this information to synthesize
- responses to ARP requests without traversing the physical
- network. The OVN logical router connected to the logical switch,
- if any, uses this information to avoid issuing ARP requests for
- logical switch ports.
+ If IPv4 address(es) are defined, the OVN logical switch uses this
+ information to synthesize responses to ARP requests without
+ traversing the physical network. The OVN logical router connected
+ to the logical switch, if any, uses this information to avoid
+ issuing ARP requests for logical switch ports.
</p>
<p>
Note that the order here is important. The Ethernet address must
- be listed before the IP address.
+ be listed before the IP address(es) if defined.
+ </p>
+
+ <p>
+ Examples:
</p>
+
+ <dl>
+ <dt><code>80:fa:5b:06:72:b7</code></dt>
+ <dd>
+ This indicates that the logical port owns the above mac address.
+ </dd>
+
+ <dt><code>80:fa:5b:06:72:b7 10.0.0.4 20.0.0.4</code></dt>
+ <dd>
+ This indicates that the logical port owns the mac address and two
+ IPv4 addresses.
+ </dd>
+
+ <dt><code>80:fa:5b:06:72:b7 fdaa:15f2:72cf:0:f816:3eff:fe20:3f41</code></dt>
+ <dd>
+ This indicates that the logical port owns the mac address and
+ 1 IPv6 address.
+ </dd>
+
+ <dt><code>80:fa:5b:06:72:b7 10.0.0.4 fdaa:15f2:72cf:0:f816:3eff:fe20:3f41</code></dt>
+ <dd>
+ This indicates that the logical port owns the mac address and
+ 1 IPv4 address and 1 IPv6 address.
+ </dd>
+ </dl>
</dd>
<dt><code>unknown</code></dt>
diff --git a/tests/ovn.at b/tests/ovn.at
index d0200e4e8..0e717320f 100644
--- a/tests/ovn.at
+++ b/tests/ovn.at
@@ -551,7 +551,12 @@ for i in 1 2 3; do
if test $j = 1; then
ovn-nbctl lport-set-addresses lp$i$j "f0:00:00:00:00:$i$j 192.168.0.$i$j" unknown
else
- ovn-nbctl lport-set-addresses lp$i$j "f0:00:00:00:00:$i$j 192.168.0.$i$j"
+ if test $j = 3; then
+ ip_addrs="192.168.0.$i$j fe80::ea2a:eaff:fe28:$i$j/64 192.169.0.$i$j"
+ else
+ ip_addrs="192.168.0.$i$j"
+ fi
+ ovn-nbctl lport-set-addresses lp$i$j "f0:00:00:00:00:$i$j $ip_addrs"
ovn-nbctl lport-set-port-security lp$i$j f0:00:00:00:00:$i$j
fi
done
@@ -719,6 +724,12 @@ for is in 1 2 3; do
tip_unknown=`ip_to_hex 11 11 11 11`
test_arp $s f000000000$s $sip $tip f000000000$d #9
test_arp $s f000000000$s $sip $tip_unknown #10
+
+ if test $jd = 3; then
+ # lport[123]3 has an additional ip 192.169.0.[123]3.
+ tip=`ip_to_hex 192 169 0 $id$jd`
+ test_arp $s f000000000$s $sip $tip f000000000$d #9
+ fi
done
done
@@ -743,6 +754,17 @@ for is in 1 2 3; do
done
done
+# set address for lp13 with invalid characters.
+# lp13 should be configured with only 192.168.0.13.
+ovn-nbctl lport-set-addresses lp13 "f0:00:00:00:00:13 192.168.0.13 invalid 192.169.0.13"
+sip=`ip_to_hex 192 168 0 11`
+tip=`ip_to_hex 192 168 0 13`
+test_arp 11 f00000000011 $sip $tip f00000000013
+
+tip=`ip_to_hex 192 169 0 13`
+#arp request for 192.169.0.13 should be flooded
+test_arp 11 f00000000011 $sip $tip
+
# Allow some time for packet forwarding.
# XXX This can be improved.
sleep 1
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