We initially assign 16 Internet Protocol version 6 (IPv6) addresses to your Linux server. If you need additional IPv6 addresses, you must configure your server to recognize them.
To Add IPv6 Addresses to Your Linux Server
- Connect to your server via SSH (more info).
- Switch to the root user (more info).
- Edit the
/etc/sysconfig/network-scripts/ifcfg-lo
network configuration file. This is an example of pre-allocated addresses:IPV6ADDR_SECONDARIES="FD60:DAD1:0101:0C00:8DD0:0000:0000:0001/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0002/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0003/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0004/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0005/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0006/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0007/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0008/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0009/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000A/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000B/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000C/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000D/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000E/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000F/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0010/128"
Append additional addresses to the end of the list. For example, to add three IP addresses, add the following three lines:
FD60:DAD1:0101:0C00:8DD0:0000:0000:0011/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0012/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0013/128
The resulting configuration file displays:
IPV6ADDR_SECONDARIES="FD60:DAD1:0101:0C00:8DD0:0000:0000:0001/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0002/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0003/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0004/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0005/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0006/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0007/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0008/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0009/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000A/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000B/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000C/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000D/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000E/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:000F/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0010/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0011/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0012/128 \
FD60:DAD1:0101:0C00:8DD0:0000:0000:0013/128"
Note: The back-slash puts each entry on its own line. The last entry has a quotation mark at the end. Place any new entries inside the quotation mark.
- To restart the network, run the following command:
/etc/init.d/network restart
- Optional: To view the configured IPv6 addresses, run the following command:
ip -6 addr show lo