Date: Fri, 11 Mar 2022 21:59:41 -0600 From: Larry Rosenman <ler@lerctr.org> To: Hajimu UMEMOTO <ume@mahoroba.org> Cc: Michael Sierchio <kudzu@tenebras.com>, Freebsd net <freebsd-net@freebsd.org> Subject: Re: IPv6: How does one have the system use a prefix gotten from rtsol with a static host part? Message-ID: <17a0d48f56f6ba5da0ac055991b0a95c@lerctr.org> In-Reply-To: <86fsnn6dwe.wl-ume@mahoroba.org> References: <d6a474ebfda77c4c8a678044d87b51ee@lerctr.org> <CAHu1Y71AP6cn2f5zyqU_ud-wyrQYXufM1TF=M6ssYFodxEKSNQ@mail.gmail.com> <9d7847539e02bfb55e2739cb67f02ee2@lerctr.org> <86h7836gy3.wl-ume@mahoroba.org> <4bc6f392a1d903aeb29c8e7886761da4@lerctr.org> <86fsnn6dwe.wl-ume@mahoroba.org>
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On 03/11/2022 9:36 pm, Hajimu UMEMOTO wrote: > Hi, > > On Sat, 12 Mar 2022 20:47:10 +0900, Larry Rosenman wrote: > >> > Something like this should work for you: >> > >> > ifconfig_eth0_ipv6="inet6 fe80::53:1 -auto_linklocal accept_rtadv" >> >> Nope, didn't work on my home net: > > It's strange to me. > That setting is actually working on my box. > >> ❯ ifconfig bce0 >> bce0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu >> 1500 >> options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE> >> ether a4:ba:db:29:66:95 >> inet 192.168.200.4 netmask 0xfffffc00 broadcast 192.168.203.255 >> inet 192.168.200.5 netmask 0xfffffc00 broadcast 192.168.203.255 > >> inet6 fe80::a6ba:dbff:fe29:6695%bce0 prefixlen 64 scopeid 0x2 > > It seems -auto_linklocal is not working for you. > >> inet6 fe80::53:1%bce0 prefixlen 64 scopeid 0x2 >> inet6 2600:1700:210:b18f:a6ba:dbff:fe29:6695 prefixlen 64 autoconf >> media: Ethernet autoselect (1000baseT <full-duplex>) >> status: active >> nd6 options=3<PERFORMNUD,ACCEPT_RTADV> >> >> grep bce0 /etc/rc.conf: >> ifconfig_bce0="inet 192.168.200.4/22 " >> ifconfig_bce0_alias0="inet 192.168.200.5/22 " >> ifconfig_bce0_ipv6="inet6 fe80::53:1 accept_rtadv -auto_linklocal" > > I'm using DHCP for IPv4 address. > When ifconfig_bce0_alias0 is set, it does not work. > It seems that ifconfig_bce0_alias0 does up bce0 before set > -auto_linklocal. > After some testing, following setting works here. > > ifconfig_bce0="inet6 fe80::53:1 -auto_linklocal" > ifconfig_bce0_alias0="inet 192.168.200.4/22" > ifconfig_bce0_alias1="inet 192.168.200.5/22" > ifconfig_bce0_ipv6="inet6 accept_rtadv" > Thank You so much. That works here too. I wonder if this deserves a document somewhere? It's NOT intuitively obvious that: a) Order in /etc/rc.conf matters b) the fe80 address influences the global address -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 E-Mail: ler@lerctr.org US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106
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