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c0e7766713
This commit adds the initial functionality for IPv6 in Basic Networking.
When a valid IPv6 CIDR is configured for the POD/VLAN the DirectPodBasedNetworkGuru
will use the EUI-64 calculation to calculate the IPv6 Address the Instance will obtain.
For this it is required that the physical routers in the Layer 2 network (POD/VLAN) send out
Router Advertisements with the same subnet as configured in CloudStack.
A example subnet could be 2001:db8::/64
Using radvd a Linux Router could send out Router Advertisements using this configuration:
interface eth0
{
MinRtrAdvInterval 5;
MaxRtrAdvInterval 60;
AdvSendAdvert on;
AdvOtherConfigFlag off;
IgnoreIfMissing off;
prefix 2001:db8::/64 {
};
RDNSS 2001:db8:ffff::53 {
};
};
A Instance with MAC Address 06:7a:88:00:00:8b will obtain IPv6 address 2001:db8:100::47a:88ff:fe00:8b
Both Windows, Linux and FreeBSD use the same calculation for their IPv6 Addresses, this is specified
in RFC4862 (IPv6 Stateless Address Autoconfiguration).
Under Linux it is mandatory that IPv6 Privacy Extensions are disabled:
$ sysctl -w net.ipv6.conf.all.use_tempaddr=0
Windows should be configured to use the MAC Address as the identifier for the EUI-64/SLAAC calculation.
$ netsh interface ipv6 set privacy state=disabled store=persistent
$ netsh interface ipv6 set global randomizeidentifiers=disabled store=persistent
The IPv6 address is stored in the 'nics' table and is then returned by the API and will be shown in the UI.
Searching for a conflicting IPv6 Address it NOT required as each IPv6 address is based on the MAC Address
of the Instance and therefor unique.
Security Grouping has not been implemented yet and will follow in a upcoming commit.
Signed-off-by: Wido den Hollander <wido@widodh.nl>