Re: [libvirt] [PATCH] Add V6LOCAL parameter to nwfilter rules.
On Wed, Apr 02, 2014 at 03:40:14PM -0400, Brian Rak wrote:
@@ -163,6 +164,28 @@
virNWFilterVarHashmapAddStdValues(virNWFilterHashTablePtr table,
"%s", _("Could not add variable 'MAC'
to hashmap"));
return -1;
}
+
+ virMacAddr parsedMac;
+ if (virMacAddrParse(macaddr, &parsedMac) == 0)
+ {
+ parsedMac.addr[0] ^= 2;
+
+ char euiMacAddr[26];
+ snprintf(euiMacAddr, sizeof(euiMacAddr),
"fe80::%x%x:%xff:fe%x:%x%x", parsedMac.addr[0], parsedMac.addr[1],
parsedMac.addr[2],
+ parsedMac.addr[3], parsedMac.addr[4], parsedMac.addr[5]);
Unfortunately this IPv6 addressing scheme isn't portable. Windows Vista
will create link local addresses which are completely random, not based
on the MAC address.
http://technet.microsoft.com/en-us/magazine/2007.08.cableguy.aspx
I wonder if there's a way todo something more clever for IPv6 to learn
the addresses, we as do for IPv4 address learning, or snoop route
advertisment traffic as we do for DHCP
Regards,
Daniel
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