Duplicate default route for ipv6 on HAP AC3

RouterOS General
1

I connect to my provider with pppoe. It gives me ipv4. Next with dhcpv6 I receive ipv6 prefix and default route.
On HAP AC and HAP AC Lite all work good, but on HAP AC3 appear duplicate defaulte route.
I not found and differences in config. Is it AC3 bug or I need reconfigure device?
Config and routes:

/interface pppoe-client
add add-default-route=yes disabled=no interface=ether1 name=pppoe-out1 \
    use-peer-dns=yes user=xxxxxxx
/ipv6 address
add from-pool=ipv6_pool interface=bridge
add address=2axx:xxxx:xxxx:xx00:: advertise=no interface=pppoe-out1
/ipv6 dhcp-client
add add-default-route=yes interface=pppoe-out1 pool-name=ipv6_pool \
    rapid-commit=no request=prefix use-peer-dns=no
/ipv6 nd
set [ find default=yes ] advertise-dns=no

/ipv6/route/ print
Flags: D - DYNAMIC; I, A - ACTIVE; c, d, v, y - COPY; H - HW-OFFLOADED; + - ECMP
Columns: DST-ADDRESS, GATEWAY, DISTANCE
      DST-ADDRESS               GATEWAY                              DISTANCE
DAd + ::/0                      fe80::250:c2ff:fe7f:cfea%pppoe-out1         1
DAv + ::/0                      pppoe-out1                                  1 <-- bad
DAc   2axx:xxxx:xxxx:xx00::/64  pppoe-out1                                  0
DAd   2axx:xxxx:xxxx:xx80::/57                                              1
DAc   2axx:xxxx:xxxx:xx80::/64  bridge                                      0
DAc   fe80::%ether1/64          ether1                                      0
DAc   fe80::%bridge/64          bridge                                      0
DAc   fe80::%pppoe-out1/64      pppoe-out1                                  0

Prefix is /57, RouterOS is 7.1.1

2

Set add-default-route=no on DHCPv6 client.

And you don’t really need global IPv6 address on pppoe-out1 interface. If you want some less cryptic LAN IPv6 address, then set it like this:

add intetface=bridge address=::1 from-pool=ipv6_pool
3

Default route from DHCPv6 is needed, without it nothing works.
Global ipv6 on pppoe-out1 has no affect on routes. I use it for connecting 2 HAP(s) by gre6 tunnel. Can I use bridge address for it?

I do double check HAP AC (it also have bad default route, but it distance is 0 (on HAP AC3 it equal 1).

/ipv6/route/ print
Flags: D - DYNAMIC; A - ACTIVE; c, d, v, y - COPY
Columns: DST-ADDRESS, GATEWAY, DISTANCE
    DST-ADDRESS               GATEWAY                              DISTANCE
D d ::/0                      fe80::250:c2ff:fe7f:cfdd%pppoe-out1         1
DAv ::/0                      pppoe-out1                                  0
DAc 2ayy:yyyy:yyyy:yy00::/64  pppoe-out1                                  0
DAd 2ayy:yyyy:yyyy:yy80::/57                                              1
DAc 2ayy:yyyy:yyyy:yy80::/64  bridge                                      0
DAc fe80::%ether1/64          ether1                                      0
DAc fe80::%bridge/64          bridge                                      0
DAc fe80::%pppoe-out1/64      pppoe-out1                                  0

On RouterOS 6 it was only one default route.

4

That is incorrect. You should set your default route only in one place, in this case in the PPPoE.
Setting it both in PPPoE and DHCPv6 worked in RouterOS v6 but it stopped working in RouterOS v7.
So remove that setting, and maybe disable/enable the PPPoE or reboot.
IPv6 should then work.

5

Thank you. It worked.