DHCPv6-PD -> Lack of route injection in RFC

Aaron Gould aaron1 at gvtc.com
Mon Sep 25 11:59:58 UTC 2017

I don't know about brocade, but here's what I see in Junos and IOS...

....dhcpv6 relay binding seen...

agould at eng-lab-5048-2> show dhcpv6 relay binding routing-instance three
Prefix                  Session Id  Expires  State    Interface    Client
2699:2699:0:7::100/128  199         2591002  BOUND    irb.26

....that same binding above is seen as a /128 route of type

agould at eng-lab-5048-2> show route table three.inet6.0 2699:2699:0:7::100/128

three.inet6.0: 16 destinations, 38 routes (16 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

                   *[Access-internal/12] 1w5d 03:19:06
                    > to fe80::fd61:6bfe:da75:4801 via irb.26


....dhcpv6 relay binding seen...

eng-lab-3600-1#sh ipv6 dhcp relay binding vrf three

Prefix: 2699:2699:FE00:30::/64 (Vlan26)
  DUID: 00030001B0B2DCCB1D1E
  IAID: Unknown
  lifetime: 2592000
  expiration: 06:21:48 CDT Oct 25 2017

....that same binding above is seen as a /64 route of type static...

eng-lab-3600-1#sh ipv6 route vrf three 2699:2699:FE00:30::/64
Routing entry for 2699:2699:FE00:30::/64
  Known via "static", distance 1, metric 0
  Route count is 1/1, share count 0
  Routing paths:
    FE80::B2B2:DCFF:FECB:1D1E, Vlan26
      Last updated 3w4d ago

eng-lab-3600-1#sh ipv6 route vrf three static
IPv6 Routing Table - three - 18 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
       B - BGP, R - RIP, I1 - ISIS L1, I2 - ISIS L2
       IA - ISIS interarea, IS - ISIS summary, ND - ND Default, NDp - ND
       DCE - Destination, NDr - Redirect, O - OSPF Intra, OI - OSPF Inter
       OE1 - OSPF ext 1, OE2 - OSPF ext 2, ON1 - OSPF NSSA ext 1
       ON2 - OSPF NSSA ext 2
S   2699:2699:FE00:30::/64 [1/0]
     via FE80::B2B2:DCFF:FECB:1D1E, Vlan26

...and as you can see, I have no static routes configured ... so it's
interesting that these routes are seen as static....

eng-lab-3600-1#sh run | in ip route

-Aaron Gould

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