Date: Tue, 20 Dec 2016 12:30:53 -0500 (EST) From: DTD <doug@safeport.com> To: Adam Vande More <amvandemore@gmail.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: anyone know what 'ping: sendto: Can't assign requested" means Message-ID: <alpine.BSF.2.00.1612201226140.23297@bucksport.safeport.com> In-Reply-To: <CA%2BtpaK24h%2BCvkSZ5uukBPdULFa2WhMRi2oU2KN_pYwPAmawHRg@mail.gmail.com> References: <alpine.BSF.2.00.1612061326441.53759@bucksport.safeport.com> <CA%2BtpaK24h%2BCvkSZ5uukBPdULFa2WhMRi2oU2KN_pYwPAmawHRg@mail.gmail.com>
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On Tue, 20 Dec 2016, Adam Vande More wrote:
> On Tue, Dec 6, 2016 at 12:33 PM, DTD <doug@safeport.com> wrote:
> For truth in advertising this is pinging from a jail. The problem is limited to pinging
> outside of the jailed environment. I took a shot a the ping source to see if there was an
> illuminating comment around the message but got lost in tacking this through libc source.
>
> I can show this is not a routing issue and the jails can ping. Our LAN has a
> dozen or so devices all in the network 192.168.2.0/24. To demonstrate the
> problem I used two hosts in the LAN and some external systems. The jail
> environment is chaos (host) and two jails, gaia and gsscc. First, from either
> jail all the above is ping-able:
>
> From gaia:
>
> gaia:~> ping -c 2 chaos
> PING chaos.boltsys.com (192.168.2.117): 56 data bytes
> 64 bytes from 192.168.2.117: icmp_seq=0 ttl=64 time=0.020 ms
> 64 bytes from 192.168.2.117: icmp_seq=1 ttl=64 time=0.047 ms
>
> --- chaos.boltsys.com ping statistics ---
> 2 packets transmitted, 2 packets received, 0.0% packet loss
> round-trip min/avg/max/stddev = 0.020/0.034/0.047/0.013 ms
> gaia:~> ping -c 2 gsscc
> PING gsscc.boltsys.com (192.168.2.111): 56 data bytes
> 64 bytes from 192.168.2.111: icmp_seq=0 ttl=64 time=0.022 ms
> 64 bytes from 192.168.2.111: icmp_seq=1 ttl=64 time=0.023 ms
>
> artemis is a host on the 192.168.2.0/24:
>
> gaia:~> ping -c 2 artemis
> PING artemis.boltsys.com (192.168.2.102): 56 data bytes
> ping: sendto: Can't assign requested address
> ping: sendto: Can't assign requested address
>
Neat, thanks Adam.
gaia:~> ping -S 192.168.2.110 artemis
PING artemis.boltsys.com (192.168.2.102) from 192.168.2.110: 56 data bytes
64 bytes from 192.168.2.102: icmp_seq=0 ttl=64 time=0.974 ms
64 bytes from 192.168.2.102: icmp_seq=1 ttl=64 time=1.082 ms
64 bytes from 192.168.2.102: icmp_seq=2 ttl=64 time=0.742 ms
64 bytes from 192.168.2.102: icmp_seq=3 ttl=64 time=1.256 ms
^C
As 192.168.2.110 is the jail IP address:
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>
ether c8:9c:dc:eb:ab:fb
inet 192.168.2.110 netmask 0xffffffff broadcast 192.168.2.110
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
I guess it's a jail thingy in kernel. Seems like a bug to me but I could not
even find where the error was coming from. Thank you again. I would (and did
not) get -S from 'man ping' as solving the problem
Doug
_____
Douglas Denault
http://www.safeport.com
doug@safeport.com
Voice: 301-217-9220
Fax: 301-217-9277
help
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