3.9. Comparison of DHCPv6 to radvd
In an IPv6 network, only router advertisement messages provide information about an IPv6 default gateway. If you want to use DHCPv6 in subnets that require a default gateway setting, you must additionally configure a router advertisement service, such as Router Advertisement Daemon (radvd).
The radvd service uses flags in router advertisement packets to announce the availability of a DHCPv6 server.
The following table compares features of DHCPv6 and radvd:
| DHCPv6 | radvd | |
|---|---|---|
| Provides information about the default gateway | no | yes |
| Guarantees random addresses to protect privacy | yes | no |
| Sends further network configuration options | yes | no |
| Maps media access control (MAC) addresses to IPv6 addresses | yes | no |