D8399.id21941.diff
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	Index: sys/dev/e1000/if_igb.c
	===================================================================
	--- sys/dev/e1000/if_igb.c
	+++ sys/dev/e1000/if_igb.c
	@@ -598,9 +598,17 @@
	}
	/* Check its sanity */
	if (!igb_is_valid_ether_addr(adapter->hw.mac.addr)) {
	- device_printf(dev, "Invalid MAC address\n");
	- error = EIO;
	- goto err_pci;
	+ if (adapter->vf_ifp) {
	+ u8 addr[ETHER_ADDR_LEN];
	+ arc4rand(&addr, sizeof(addr), 0);
	+ addr[0] &= 0xFE;
	+ addr[0] \|= 0x02;
	+ bcopy(addr, adapter->hw.mac.addr, sizeof(addr));
	+ } else {
	+ device_printf(dev, "Invalid MAC address\n");
	+ error = EIO;
	+ goto err_pci;
	+ }
	}

	/* Setup OS specific network interface */