Date: Mon, 7 Jul 2008 13:54:40 -0400 From: Jason Morgan <jwm-freebsd-questions@sentinelchicken.net> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Jails and IP Aliasing Message-ID: <20080707175440.GA95976@sentinelchicken.net> In-Reply-To: <2daa8b4e0807070951u607ff031v98b5b96103fdab4@mail.gmail.com> References: <2daa8b4e0807070951u607ff031v98b5b96103fdab4@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hello,
On 2008.07.07 09:51:33, David Allen wrote:
> Unless I'm losing my mind, I'm encountering what seems to yet another
> gotcha with jails. The following has been dumbed down for clarity and
> brevity.
>
> ---------------------------------------------------------------------
> # hostname
> jailhost.example.org
>
> # host jailhost
> jailhost.example.org has address 10.0.1.2
>
> # ifconfig fxp0
> fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> options=b<RXCSUM,TXCSUM,VLAN_MTU>
> ether 00:07:e9:c8:2e:32
> inet 10.0.1.2 netmask 0xffffff00 broadcast 10.0.1.255
> inet 10.0.1.3 netmask 0xffffffff broadcast 10.0.1.3
> inet 10.0.1.4 netmask 0xffffffff broadcast 10.0.1.4
> media: Ethernet autoselect (100baseTX <full-duplex>)
> status: active
This is the output for my jail interface. Notice that your jail
aliases are broadcasting on the jail's IP. I don't know if this is an
issue or not (my jails run on i386 FBSD 6.3), but it's something to
look at. How are you setting the aliases?
sk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=b<RXCSUM,TXCSUM,VLAN_MTU>
inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255
inet 10.0.0.101 netmask 0xffffff00 broadcast 10.0.0.255
inet 10.0.0.201 netmask 0xffffff00 broadcast 10.0.0.255
ether xx:xx:xx:xx:xx:xx
media: Ethernet autoselect (1000baseTX <full-duplex,flag0,flag1>)
status: active
Cheers,
~Jason
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20080707175440.GA95976>