Changing Dynamic IPv4 Addresses To Dynamic IPv6 Addresses Using SRVCTL

Note:

If the IPv4 network is in mixed mode with both static and dynamic addresses, then you cannot perform this procedure. You must first transition all addresses to dynamic.

To change a dynamic IPv4 address to a dynamic IPv6 address:

Add an IPv6 subnet using the srvctl modify network command.
To add the IPv6 subnet, log in as root and use the following command syntax:
```
srvctl modify network -netnum network_number –subnet ipv6_subnet/
   ipv6_prefix_length[/interface] -nettype autoconfig
```
In the preceding syntax:
- network_number is the number of the network
- ipv6_subnet is the subnet of the IPv6 address to which you are changing (for example, 2001:db8:122:344:c0:2:2100::)
- ipv6_prefix_length is the prefix specifying the IPv6 network address (for example, 64)
For example, the following command modifies network 3 by adding an IPv6 subnet, 2001:db8:122:344:c0:2:2100::, and the prefix length 64:
```
# srvctl modify network -netnum 3 -subnet
     2001:db8:122:344:c0:2:2100::/64 -nettype autoconfig
```
Add the IPv6 network resource to OCR using the following command:
```
oifcfg setif -global if_name/subnet:public
```
See Also:

"OIFCFG Command Format" for usage information for this command

Start the IPv6 dynamic addresses, as follows:

srvctl modify network -netnum network_number -iptype both

For example, on network number 3:

# srvctl modify network -netnum 3 -iptype both

Change all clients served by the cluster from IPv4 networks and addresses to IPv6 networks and addresses.

At this point, the SCAN in the GNS-delegated domain scan_name.gns_domain will resolve to three IPv4 and three IPv6 addresses.
Turn off the IPv4 part of the dynamic addresses on the cluster using the following command:
```
# srvctl modify network -iptype ipv6
```
After you run the preceding command, the SCAN (scan_name.gns_domain) will resolve to only three IPv6 addresses.