Index: uspace/drv/nic/ne2k/dp8390.c
===================================================================
--- uspace/drv/nic/ne2k/dp8390.c	(revision 2f016dfa8443d9b1a11f8f924f62adadb7830f4f)
+++ uspace/drv/nic/ne2k/dp8390.c	(revision 87955bfbf369bf1c061281586f0bfdcc29d27795)
@@ -142,8 +142,9 @@
 static void ne2k_upload(ne2k_t *ne2k, void *buf, size_t addr, size_t size)
 {
+	size_t esize_ru = (size + 1) & ~1;
 	size_t esize = size & ~1;
 	
-	pio_write_8(ne2k->port + DP_RBCR0, esize & 0xff);
-	pio_write_8(ne2k->port + DP_RBCR1, (esize >> 8) & 0xff);
+	pio_write_8(ne2k->port + DP_RBCR0, esize_ru & 0xff);
+	pio_write_8(ne2k->port + DP_RBCR1, (esize_ru >> 8) & 0xff);
 	pio_write_8(ne2k->port + DP_RSAR0, addr & 0xff);
 	pio_write_8(ne2k->port + DP_RSAR1, (addr >> 8) & 0xff);