BIND 10 #1965: resolver returning SERVFAIL

[BIND 10 Development]

#1965: resolver returning SERVFAIL
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                   Reporter:  jreed     |                 Owner:
                       Type:  defect    |                Status:  new
                   Priority:  medium    |             Milestone:  New Tasks
                  Component:  resolver  |            Resolution:
                   Keywords:            |             Sensitive:  0
            Defect Severity:  N/A       |           Sub-Project:  DNS
Feature Depending on Ticket:            |  Estimated Difficulty:  0
        Add Hours to Ticket:  0         |           Total Hours:  0
                  Internal?:  0         |
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Comment (by jreed):

 From the system, five out of six (including two other inet6 servers) of
 the authoritative nameservers are reachable.

 It should not fail if 1 of 6 timeout.

 The unreachable nameserver is 2001:4f8:0:2::19.  Since I am not an IPv6
 expert, can anyone notice problem(s) with the following?

 {{{
 %route -n get -inet6 2001:4f8:0:2::19
    route to: 2001:4f8:0:2::19
 destination: ::
        mask: default
     gateway: 2001:4f8:3:d::1
   interface: em0
       flags: <UP,GATEWAY,DONE,STATIC>
  recvpipe  sendpipe  ssthresh  rtt,msec    mtu        weight    expire
        0         0         0         0      1500         1         0

 %netstat -rn -f inet6
 Routing tables

 Internet6:
 Destination                       Gateway                       Flags
 Netif Expire
 default                           2001:4f8:3:d::1               UGS
 em0
 ::1                               ::1                           UH
 lo0
 2001:4f8:3:d::/64                 link#1                        U
 em0
 2001:4f8:3:d::80                  link#1                        UHS
 lo0
 2001:4f8:3:d::95                  link#1                        UHS
 lo0
 fe80::%lo0/64                     link#5                        U
 lo0
 fe80::1%lo0                       link#5                        UHS
 lo0
 ff01:1::/32                       2001:4f8:3:d::80              U
 em0
 ff01:5::/32                       fe80::1%lo0                   U
 lo0
 ff02::%em0/32                     2001:4f8:3:d::80              U
 em0
 ff02::%lo0/32                     fe80::1%lo0                   U
 lo0

 %traceroute6 2001:4f8:0:2::19
 traceroute6 to 2001:4f8:0:2::19 (2001:4f8:0:2::19) from 2001:4f8:3:d::80,
 64 hops max, 12 byte packets
  1  2001:4f8:3:d::1  3.270 ms  1.815 ms  1.859 ms
  2  * * *
  3  * * *
  4  * * *
  5  * * *
  6  *^C

 %ifconfig em0
 em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
         options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
         ether 00:14:22:b0:82:d4
         inet 149.20.48.59 netmask 0xffffff80 broadcast 149.20.48.127
         inet6 2001:4f8:3:d::80 prefixlen 64
         inet 149.20.48.80 netmask 0xffffff80 broadcast 149.20.48.127
         inet6 2001:4f8:3:d::95 prefixlen 64
         nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
         media: Ethernet autoselect (100baseTX <full-duplex>)
         status: active

 %ifconfig lo0
 lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
         options=3<RXCSUM,TXCSUM>
         inet6 fe80::1%lo0 prefixlen 64 scopeid 0x5
         inet6 ::1 prefixlen 128
         inet 127.0.0.1 netmask 0xff000000
         nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
 }}}

-- 
Ticket URL: <http://bind10.isc.org/ticket/1965#comment:2>
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