diff --git a/doc/sphinx/arm/dhcp4-srv.rst b/doc/sphinx/arm/dhcp4-srv.rst index 162df20c9f..4490254127 100644 --- a/doc/sphinx/arm/dhcp4-srv.rst +++ b/doc/sphinx/arm/dhcp4-srv.rst @@ -3943,14 +3943,15 @@ IPv6-only Preferred Networks ---------------------------- A `RFC8925 `_ recently published by IETF -specifies a DHCPv4 option to indicate that a host supports an IPv6-only mode and is willing to -forgo obtaining an IPv4 address if the network provides IPv6 connectivity. The general idea is that +specifies a DHCPv4 option to indicate that a host supports an +IPv6-only mode and is willing to forgot obtaining an IPv4 address if +the network provides IPv6 connectivity. The general idea is that a network administrator can enable this option to signal to compatible dual-stack devices that the IPv6 connectivity is available and they can shut down their IPv4 stack. The new option `v6-only-preferred` content is a 32 bit unsigned integer and specifies for how long the device should disable its stack for. The value is expressed in seconds. -The draft mentions V6ONLY_WAIT timer. This is implemented in Kea by setting the value of +The RFC mentions V6ONLY_WAIT timer. This is implemented in Kea by setting the value of v6-only-preferred option. This follows the usual practice of setting options. You can specify the option value on pool, subnet, shared network, global levels or even specify it in host reservations.