Date: Tue, 9 Oct 2018 07:16:44 +0700 From: Victor Sudakov <vas@mpeks.tomsk.su> To: Kevin Oberman <rkoberman@gmail.com> Cc: citrin+bsd@citrin.ru, freebsd-net <freebsd-net@freebsd.org> Subject: Re: why rtsold ? Message-ID: <20181009001644.GA86174@admin.sibptus.ru> In-Reply-To: <CAN6yY1vD7fOA1LPL2aq8yjkhSJh9q1n-g4n4_3t3jPUxG-X1aA@mail.gmail.com> References: <20180930022007.GA2041@admin.sibptus.ru> <cf43783f-80ac-11e0-0080-44ee9bb45606@citrin.ru> <20181008170044.GA80041@admin.sibptus.ru> <CAN6yY1vD7fOA1LPL2aq8yjkhSJh9q1n-g4n4_3t3jPUxG-X1aA@mail.gmail.com>
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Kevin Oberman wrote: > > > > When running FreeBSD as an IPv6 host im SLAAC mode, is > > > > "rtsold_enable=YES" really necessary? I did not enable rtsold and IPv6 > > > > still works fine only with > > > > > > rtsold is needed to write DNS server address from RDNSS RA option to > > > /etc/resolv.conf > > > > > > man rtsold > > > /-R > > > > On my test IPv6-only host, /etc/resolv.conf was successfully created > > without any explicit "rtsold_enable=YES". > > > > -- > > Victor Sudakov, VAS4-RIPE, VAS47-RIPN > > 2:5005/49@fidonet http://vas.tomsk.ru/ > > > Remember that DHCPv6 can provide DNS server and other information even when > SLAAC is used for address configuration. If it is, it is possible to run > SLAAC without rtsold, but it may not prove stable as it is not possible to The case is that my IPv6 lab (actually a number of FreeBSD hosts in bhyve) does not have a DHCPv6 server. Still, the /etc/resolv.conf on IPv6-only hosts is successfully populated from the router. The latter is running only rtadvd with the following config: bridge0:rdnss="2001:470:20::2,2001:4860:4860::8888,2001:4860:4860::8844":dnssl="sibptus.ru": Magick? -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN 2:5005/49@fidonet http://vas.tomsk.ru/
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