Hi Ed,
If searching the mailing lists like misc@ haven’t been helpful, there’s an 
active group on Facebook that has a large group of users as well as some of the 
OpenBSD devs. Possible you might get the info you need there-
https://www.facebook.com/groups/2210554563

Cheers, Eric

> On Sep 28, 2017, at 22:57, Ed D. <li...@rensseltucky.com> wrote:
> 
> 
> Hi,
>     After several long days of trying to figure this out
> I must say I'm stumped.
> I'm running OpenBSD 6.2 (GENERIC.MP) as of 9/26/17
> AMD64 version with dhcpcd-6.11.5p4
> 
>      Does anybody have a working IPv6 setup
> that works with Comcast Business class service
> that will allow me to use IPv6 on my LAN that
> I could look at?
> 
> So far, all I can get to work is what I get
> from placing "inet6 autoconf" in my WAN
> and LAN interfaces.
> 
> I've now gotten rtadvd.conf to where i don't get errors
> in /var/log/daemon.
> 
> I can ping from the command line of the router
> any web address I enter.
> 
> I have dhcpcd-6.11.5p4 installed and have tried
> countless variations of the readme file
> example, the dist /etc/dhcpcd.conf, and various
> other examples I've gotten from various places.
> 
> I've googled, searched mailing list archives,
> and none of what I've found is helping me.
> 
> If ANYBODY has gotten this to work, could you
> let me know what you did?
> 
> I'm just spinning my wheels, and I have RTFM
> for days but just not fnding the answer.
>                             Thanks, Ed
> 
> 
> On 27 Sep 2017 at 23:25, Ed  D. wrote:
> 
> Hi,
>    I'm having trouble getting IPv6 working on
> my router to assign IPv6 addresses to the computers
> on my LAN.
> I'm SURE there's something obvious I've been missing
> and hope I can get a nudge back on track.
> 
> I have Comcast Business Class service, with a static
> IPv6 address, 26xx:300f:1603:8000::/56
> as well as a working block of IPv4 addresses.
> 
>    I'm running OpenBSD 6.2 (GENERIC.MP) as of 9/26/17
> AMD64 version.
> 
> I'm using em2 for my Internet facing interface
> and em1 for my LAN facing interface.
> 
> By simply adding "inet6 autoconf" to
> both hostname.em1 and hostname.em2, I get my IPv6 static IP
> assigned to the router as shown below from ifconfig -A.
> I and can ping6 any web address.
> 
> THE problem is taking the next step of getting IPv6
> addresses assigned to computers on my LAN, which are 
> Windows 7 64bit Professional based systems.
> 
> In reading mailing list archives and te web, I see
> dhcpcd being recommended to do this.
> 
> I've looked at the read-me file from the dhcpcd package,
> the default /etc/dhcpcd.conf file, various posts
> from email archives, and web posts.
> I've experimented with them all in various configurations
> and I get nothing that will simply add the capability
> to assign IPv6 addresses to the computers on my LAN.
> 
> I also want to leave me present working IPv4 dhcp setup intact.
> 
> I would REALLY appreciate any direction with this, as there's
> something I'm missing.
>                           Thanks,  Ed
> 
> I also get this in my daemon log
> # cd /var/log
> # cat daemon
> Sep 27 23:20:21 meenon rtadvd[8704]: M flag inconsistent on em2: ON 
> from
> fe80::f44b:2aff:fe77:33d0, OFF from us Sep 27 23:20:21 meenon
> rtadvd[8704]: O flag inconsistent on em2: ON from
> fe80::f44b:2aff:fe77:33d0, OFF from us Sep 27 23:20:21 meenon
> rtadvd[8704]: preferred lifetime for 2603:300f:1603:8000::/64
> inconsistent on em2: 345600 from fe80::f44b:2aff:fe77:33d0, 604800 from
> us Sep 27 23:20:21 meenon rtadvd[8704]: valid lifetime for
> 2603:300f:1603:8000::/64 inconsistent on em2: 345600 from
> fe80::f44b:2aff:fe77:33d0, 2592000 from us Sep 27 23:20:24 meenon
> rtadvd[8704]: M flag inconsistent on em2: ON from
> fe80::f44b:2aff:fe77:33d0, OFF from us Sep 27 23:20:24 meenon
> rtadvd[8704]: O flag inconsistent on em2: ON from
> fe80::f44b:2aff:fe77:33d0, OFF from us Sep 27 23:20:24 meenon
> rtadvd[8704]: preferred lifetime for 2603:300f:1603:8000::/64
> inconsistent on em2: 345600 from fe80::f44b:2aff:fe77:33d0, 604800 from
> us Sep 27 23:20:24 meenon rtadvd[8704]: valid lifetime for
> 2603:300f:1603:8000::/64 inconsistent on em2: 345600 from
> fe80::f44b:2aff:fe77:33d0, 2592000 from us Sep 27 23:20:27 meenon
> rtadvd[8704]: M flag inconsistent on em2: ON from
> fe80::f44b:2aff:fe77:33d0, OFF from us Sep 27 23:20:27 meenon
> rtadvd[8704]: O flag inconsistent on em2: ON from
> fe80::f44b:2aff:fe77:33d0, OFF from us Sep 27 23:20:27 meenon
> rtadvd[8704]: preferred lifetime for 2603:300f:1603:8000::/64
> inconsistent on em2: 345600 from fe80::f44b:2aff:fe77:33d0, 604800 from
> us Sep 27 23:20:27 meenon rtadvd[8704]: valid lifetime for
> 2603:300f:1603:8000::/64 inconsistent on em2: 345600 from
> fe80::f44b:2aff:fe77:33d0, 2592000 from us Sep 27 23:20:30 meenon
> rtadvd[8704]: M flag inconsistent on em2: ON from
> fe80::f44b:2aff:fe77:33d0, OFF from us Sep 27 23:20:30 meenon
> rtadvd[8704]: O flag inconsistent on em2: ON from
> fe80::f44b:2aff:fe77:33d0, OFF from us Sep 27 23:20:30 meenon
> rtadvd[8704]: preferred lifetime for 2603:300f:1603:8000::/64
> inconsistent on em2: 345600 from fe80::f44b:2aff:fe77:33d0, 604800 from
> us Sep 27 23:20:30 meenon rtadvd[8704]: valid lifetime for
> 2603:300f:1603:8000::/64 inconsistent on em2: 345600 from
> fe80::f44b:2aff:fe77:33d0, 2592000 from us
> 
> 
> 
> =======
> # ifconfig -A
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 32768
>        index 6 priority 0 llprio 3
>        groups: lo
>        inet6 ::1 prefixlen 128
>        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x6
>        inet 127.0.0.1 netmask 0xff000000
> em1: flags=208843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,AUTOCONF6> mtu
> 1500
>        lladdr xx:36:9f:87:06:0b
>        description: Private Network
>        index 2 priority 0 llprio 3
>        media: Ethernet autoselect (1000baseT 
> full-duplex,master,rxpause,txpause)
>        status: active
>        inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255
>        inet6 fe80::a236:9fff:fe87:60b%em1 prefixlen 64 scopeid 0x2
> em2: flags=208843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,AUTOCONF6> mtu
> 1500
>        lladdr xx:c4:7a:6d:3b:0e
>        description: Internet Interface
>        index 3 priority 0 llprio 3
>        groups: egress
>        media: Ethernet autoselect (1000baseT 
> full-duplex,rxpause,txpause)
>        status: active
>        inet xx.85.179.161 netmask 0xfffffff8 broadcast 96.85.179.167
>        inet xx.85.179.162 netmask 0xffffffff inet xx.85.179.163 
> netmask
>        0xffffffff inet xx.85.179.164 netmask 0xffffffff inet
>        xx.85.179.165 netmask 0xffffffff inet6
>        fe80::ec4:7aff:fe6d:3b0e%em2 prefixlen 64 scopeid 0x3 inet6
>        26xx:300f:1603:8000:7801:c62:cc2d:3a78 prefixlen 64 
> autoconf autoconfprivacy pltime 81492 vltime 341077
>        inet6 26xx:300f:1603:8000:ec4:7aff:fe6d:3b0e prefixlen 64 
> autoconf pltime 345598 vltime 345598
> enc0: flags=0<>
>        index 5 priority 0 llprio 3
>        groups: enc
>        status: active
> pflog0: flags=141<UP,RUNNING,PROMISC> mtu 33136
>        index 7 priority 0 llprio 3
>        groups: pflog
> #
> 
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