Fix Bug 23595729 dnet can't send out packet

Will not send upstream

--- libdnet-1.12/src/eth-dlpi.c.orig 2016-09-26 15:47:06.875827196 +0000

+++ libdnet-1.12/src/eth-dlpi.c 2016-09-26 17:00:25.875054128 +0000

@@ -137,7 +137,7 @@

}

#else

e->fd = -1;

- snprintf(dev, sizeof(dev), "/dev/%s", device);

+ snprintf(dev, sizeof(dev), "/dev/net/%s", device);

if ((p = strpbrk(dev, "0123456789")) == NULL) {

errno = EINVAL;

return (eth_close(e));

@@ -146,7 +146,7 @@

*p = '\0';

if ((e->fd = open(dev, O_RDWR)) < 0) {

- snprintf(dev, sizeof(dev), "/dev/%s", device);

+ snprintf(dev, sizeof(dev), "/dev/net/%s", device);

if ((e->fd = open(dev, O_RDWR)) < 0)

return (eth_close(e));

}