Date: Sun, 30 Sep 2018 12:24:02 +0700 From: Victor Sudakov <vas@mpeks.tomsk.su> To: Alan Somers <asomers@freebsd.org> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: why rtsold ? Message-ID: <20180930052402.GA2335@admin.sibptus.ru> In-Reply-To: <CAOtMX2gDVSmEacBacumPjthNU-RxoxLanjp%2BEhPb=nefX2m5cg@mail.gmail.com> References: <20180930022007.GA2041@admin.sibptus.ru> <CAOtMX2gDVSmEacBacumPjthNU-RxoxLanjp%2BEhPb=nefX2m5cg@mail.gmail.com>
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Alan Somers 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 > > > > fconfig_re0="" > > ifconfig_re0_ipv6="inet6 accept_rtadv" > > > > What would be the point of enabling rtsold then? > > The router may send a router advertisement whenever it wants. That's why > your machine seems to work even without rtsold. However, SLAAC addresses > expire after a certain amount of time. rtsold will ask the router for a > new advertisement before your address expires. You aren't guaranteed to > have problems if you don't run rtsold, but you aren't guaranteed not to > have problems if you don't. Best to let it run. I see the point but who on earth sent the initial router solicitation on boot if I never enabled rtsold? I have not found rtsold in /etc/rc.d/netif or similar startup script. -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN 2:5005/49@fidonet http://vas.tomsk.ru/
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