ntpq: write to localhost failed: Network is unreachable

[Anton Shterenlikht]

On Wed, Jun 16, 2010 at 06:08:35PM +0100, Matthew Seaman wrote:
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> On 16/06/2010 17:59:10, Anton Shterenlikht wrote:
> > After a recent upgrade to r209156 I get this error:
> > 
> > $ ntpq -p
> > ntpq: write to localhost failed: Network is unreachable
> > 
> > Please advise
> 
> What does 'ifconfig -a' and 'netstat -rn' say?

$ ifconfig -a
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
        ether 00:13:21:5b:05:1c
        inet 137.222.187.28 netmask 0xffffff00 broadcast 137.222.187.255
        inet6 fe80::213:21ff:fe5b:51c%em0 prefixlen 64 scopeid 0x1 
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
em1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
        ether 00:13:21:5b:05:1d
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        options=3<RXCSUM,TXCSUM>
        inet 127.0.0.1 netmask 0xff000000 
        inet6 ::1 prefixlen 128 
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3 
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

$ netstat -rn
Routing tables

Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            137.222.187.250    UGS         0    65512    em0
127.0.0.1          link#3             UH          0      293    lo0
137.222.187.0/24   link#1             U           0    10861    em0
137.222.187.28     link#1             UHS         0        0    lo0

Internet6:
Destination                       Gateway                       Flags      Netif Expire
::/96                             ::1                           UGRS        lo0
::1                               ::1                           UH          lo0
::ffff:0.0.0.0/96                 ::1                           UGRS        lo0
fe80::/10                         ::1                           UGRS        lo0
fe80::%em0/64                     link#1                        U           em0
fe80::213:21ff:fe5b:51c%em0       link#1                        UHS         lo0
fe80::%lo0/64                     link#3                        U           lo0
fe80::1%lo0                       link#3                        UHS         lo0
ff01:1::/32                       fe80::213:21ff:fe5b:51c%em0   U           em0
ff01:3::/32                       ::1                           U           lo0
ff02::/16                         ::1                           UGRS        lo0
ff02::%em0/32                     fe80::213:21ff:fe5b:51c%em0   U           em0
ff02::%lo0/32                     ::1                           U           lo0



>  What happens if you try and ping localhost?

$ ping -c5 localhost
PING localhost (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.109 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.103 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.060 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.059 ms
64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=0.059 ms

--- localhost ping statistics ---
5 packets transmitted, 5 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.059/0.078/0.109/0.023 ms



many thanks
anton


-- 
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423