Two eth interfaces in one subnet

[Alex Zolotov]

Hello all!
I want to use two ethernet interfaces with IP addresses in one subnet.
Configuration part of my program is below.

extern void rtems_bsdnet_loopattach();
static struct rtems_bsdnet_ifconfig loopback_config =
{
    "lo0",                      /* name */
    (int (*)(struct rtems_bsdnet_ifconfig *, int))rtems_bsdnet_loopattach,
    NULL,                       /* link to next interface */
    "127.0.0.1",                /* IP address */
    "255.0.0.0",                /* IP net mask */
};
static struct rtems_bsdnet_ifconfig eth1_config =
{
    "eth1",                             /* name */
    rtems_vmac_attach,                  /* attach (FPGA EMAC) */
    &loopback_config,                   /* link to next interface */
    192.168.1.48,                    /* IP address */
    "255.255.255.0",                    /* IP net mask */
    ethernet_address1,                  /* Ethernet hardware address */
    0
};
static struct rtems_bsdnet_ifconfig eth0_config =
{
    "eth0",      /* name */
    RTEMS_BSP_NETWORK_DRIVER_ATTACH,    /* attach (ARM EMAC) */
    &eth1_config,                       /* link to next interface */
    192.168.1.47,                    /* IP address */
    "255.255.255.0",                    /* IP net mask */
    ethernet_address0,                  /* Ethernet hardware address */
    0
};
struct rtems_bsdnet_config rtems_bsdnet_config =
{
    &eth0_config,       /* Network interface */
    NULL,               /* Use fixed network configuration */
    0,                  /* Default network task priority */
    128*1024,           /* Default mbuf capacity */
    256*1024,           /* Default mbuf cluster capacity */
    "testSystem",       /* Host name */
    "nowhere.com",      /* Domain name */
    "",
    "",                 /* Log host */
    {""},               /* Name server(s) */
    {""}                /* NTP server(s) */
};

(ethernet_address0 and ethernet_address1 are different)
But i got following error: "Can't set eth1 address: File exists"
And after that eth0 working only.
Help me, please.

Thanks.
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