tests: net: misc: Use different subnets on test interfaces

The test interfaces registered addresses within the same subnet. As now
only the subnet part of the address is verified when choosing source
address or interface, it was not deterministic which interface would be
selected. Therefore, make the two interfaces use two different subnets
so that tests that verified which address/interface was used work
reliably as earlier.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>

tests/net/socket/misc/src/main.c

@@ -53,14 +53,14 @@ ZTEST_USER(socket_misc_test_suite, test_inet_pton)
 	zassert_equal(res, 0, "");
 }
 
-#define TEST_MY_IPV4_ADDR "192.0.2.1"
+#define TEST_MY_IPV4_ADDR "192.0.1.1"
 #define TEST_PEER_IPV4_ADDR "192.0.2.2"
 #define TEST_MY_IPV6_ADDR "2001:db8::1"
 #define TEST_PEER_IPV6_ADDR "2001:db8::2"
 
 static struct in6_addr my_ipv6_addr1 = { { { 0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0,
 					     0, 0, 0, 0, 0, 0, 0, 0x1 } } };
-static struct in_addr my_ipv4_addr1 = { { { 192, 0, 2, 1 } } };
+static struct in_addr my_ipv4_addr1 = { { { 192, 0, 1, 1 } } };
 
 static struct in6_addr my_ipv6_addr2 = { { { 0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0,
 					     0, 0, 0, 0, 0, 0, 0, 0x2 } } };
@@ -300,7 +300,7 @@ void test_ipv4_so_bindtodevice(void)
 	struct sockaddr_in peer_addr_1 = {
 		.sin_family = AF_INET,
 		.sin_port = htons(DST_PORT),
-		.sin_addr = { { { 192, 0, 2, 1 } } },
+		.sin_addr = { { { 192, 0, 1, 1 } } },
 	};
 	struct sockaddr_in peer_addr_2 = {
 		.sin_family = AF_INET,
@@ -729,7 +729,7 @@ void test_ipv4_mapped_to_ipv6_server(void)
 	 */
 	srv_addr.sa_family = AF_INET;
 	net_sin(&srv_addr)->sin_port = htons(MAPPING_PORT);
-	ret = zsock_inet_pton(AF_INET, "192.0.2.1",
+	ret = zsock_inet_pton(AF_INET, "192.0.1.1",
 			      &net_sin(&srv_addr)->sin_addr);
 	zassert_equal(ret, 1, "inet_pton failed");