Date: Mon, 7 Feb 2022 19:56:41 +0100 From: Goran =?utf-8?B?TWVracSH?= <meka@tilda.center> To: freebsd-net@freebsd.org Subject: IPv6 route vanishes Message-ID: <20220207185641.gjre47smcapiz4tb@tilda.center>
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--4z443e6ejf6hh2d5 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Hello, On router, "lan" is bridge interface consisting of igb1, igb2 and wlan0. To put it short, on router rtadvd.conf is one line 'lan:addr="2001:470:1f1a:2c6::""'. On desktop I have this in rc.conf: ifconfig_re0="DHCP" ifconfig_re0_ipv6="inet6 -ifdisabled auto_linklocal accept_rtadv" The problem is that I also have to add "ipv6_defaultrouter" in rc.conf otherwise route acquired through rtadvd/rtsold is not present about 10 minutes after initial start of rtsold. What's weird is that if rtsold runs in a VNET jail, route does not go away. On that server I just bridge all epairs and egress so I know the same rtadvd running on router used in both cases. Also, that's the reason I'm suspecting rtsold is faulty, either it has a bug or I still have a lot to learn (I just started with IPv6). More details are attached to this PR: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261129 Even more details on the setup are given in my blog post: https://meka.rs/blog/2022/01/15/freebsd-dual-stack-network/ The workaround with ipv6_defaultrouter works perfectly on desktop and server, but it's really annoying on the laptop. Is there a doc part I missed or something? Regards, meka --4z443e6ejf6hh2d5 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE1WIFkXy2ZeMKjjKEWj1TknovrLYFAmIBa2UACgkQWj1Tknov rLbing//dHxRKK4d1DU7Xz5rMJVvvwVqv0s9WyqJeVwlmZt8gj4+6HgNznCkMDW4 lcKAgy09j1vs3New/TUc10hu6Hne/+YgSV6teuuUemGgX8sZLf88UWKil00I0zkB tPWVhGHeHj6mF/Ph6BlaqdOlk4OlnQnPD7JN1g7+m0i5sDIoiePv8N49y9YomGLe SPunDMyTQ9QyUuCT1tiNpiWVV4YYM/ugyEI0T62yAc+Z2GxxOEF0gJh1u3BSLnFS PzvxKG+fwUzInC6RlBC8dpGfHcFi6M8VO1aN3097n+wDQHicx/HjQKy2zBYDf4QB aKkfjtnonMBU9UC1gL1Hg57l7HpyhYbbR1yhqcUcaAW3dyw3vScLoo9pq4n5N2cI SIciBN4PL35GU7KUZwKIVktkrdE8tRumo+caD2WX9A4C8IhBVbXr76Zki4ovm7ri 5LjPtwmmCgTls+QrkoJAf/cLvabJ79yHPz+BbfZdeFkl2uC+gaSHS79qpLyPpv7z k0iwpg/zZ71UEglEJo6zuzJxzKDj0PiB5fTAoSOCeS5Ru/gXUyUzPwAiaHsRYt6i CRVPkLDm4fcI8141fcuX2BnxwqUrHZNPXE8YuRNY1mz4RliQc4aAL+qUJ3fV5Fhb tCWVQiQoK+d4jlNfbQl147gb0b8CiTyx/m57jIG4SL3eCLuS210= =UUBB -----END PGP SIGNATURE----- --4z443e6ejf6hh2d5--
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