Date: Thu, 21 Apr 2011 17:08:35 +0200 (CEST) From: sthaug@nethelp.no To: fbsd@opal.com Cc: freebsd-net@freebsd.org, lev@freebsd.org Subject: Re: stateless dhcp6 server for FreeBSD? Message-ID: <20110421.170835.78742526.sthaug@nethelp.no> In-Reply-To: <20110421105356.51d881ca@shibato.opal.com> References: <969959848.20110421024515@serebryakov.spb.ru> <20110421105356.51d881ca@shibato.opal.com>
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> > Is here any stateless dhcp6 solution for FreeBSD? > > > > I need only distribute IPv6 DNS server addresses to clients, but not > > prefixes or address information. > > > > DHCP is stateful. If you want stateless, you need IPv6 RDNSS router > advertisements. Claiming that DHCP is (always) stateful is wrong. DHCP can be stateful or stateless - it depends on what kind of information you ask for, and the type of DHCP request. For DHCPv4 - you can use the DHCPINFORM request to ask for DNS servers and similar, without the server storing any state. For DHCPv6 - you can use the Information-request in a similar way. See RFC 3736, "Stateless Dynamic Host Configuration Protocol (DHCP) Service for IPv6", <http://tools.ietf.org/html/rfc3736>. ISC DHCP version 4 implements Information-request. See for instance file dhcpv6.c, routine dhcpv6_information_request. Steinar Haug, Nethelp consulting, sthaug@nethelp.no
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