linux-kernel - Re: [PATCH] tools: hv: kvp_daemon: make IPv6-only-injection work

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Message-ID: <87ppbrhnz9.fsf@vitty.brq.redhat.com>
Date:	Wed, 10 Dec 2014 10:07:38 +0100
From:	Vitaly Kuznetsov <vkuznets@...hat.com>
To:	Dexuan Cui <decui@...rosoft.com>
Cc:	"gregkh\@linuxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	"driverdev-devel\@linuxdriverproject.org" 
	<driverdev-devel@...uxdriverproject.org>,
	"olaf\@aepfle.de" <olaf@...fle.de>,
	"apw\@canonical.com" <apw@...onical.com>,
	"jasowang\@redhat.com" <jasowang@...hat.com>,
	KY Srinivasan <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: Re: [PATCH] tools: hv: kvp_daemon: make IPv6-only-injection work

Dexuan Cui <decui@...rosoft.com> writes:

> Thanks,
> -- Dexuan
>
>> -----Original Message-----
>> From: Dexuan Cui
>> Sent: Wednesday, December 10, 2014 15:34 PM
>> To: 'Vitaly Kuznetsov'
>> Cc: gregkh@...uxfoundation.org; linux-kernel@...r.kernel.org; driverdev-
>> devel@...uxdriverproject.org; olaf@...fle.de; apw@...onical.com;
>> jasowang@...hat.com; KY Srinivasan; Haiyang Zhang
>> Subject: RE: [PATCH] tools: hv: kvp_daemon: make IPv6-only-injection work
>> 
>> > -----Original Message-----
>> > From: Vitaly Kuznetsov [mailto:vkuznets@...hat.com]
>> > Sent: Tuesday, December 9, 2014 21:06 PM
>> > To: Dexuan Cui
>> > Cc: gregkh@...uxfoundation.org; linux-kernel@...r.kernel.org; driverdev-
>> > devel@...uxdriverproject.org; olaf@...fle.de; apw@...onical.com;
>> > jasowang@...hat.com; KY Srinivasan; Haiyang Zhang
>> > Subject: Re: [PATCH] tools: hv: kvp_daemon: make IPv6-only-injection work
>> >  ......
>> > > +	 * Here "dhcp_enabled" is only for IPv4 according to Hyper-V host
>> > team.
>> > > +	 *
>> > > +	 * In the case the host only injects 1 IPv6 address:
>> > > +	 * new_val->dhcp_enabled is true, but we can't pass
>> > BOOTPROTO=dhcp to
>> > > +	 * the script hv_set_ifconfig, because in some distros (like RHEL7)
>> > > +	 * BOOTPROTO=dhcp has a special meaning in the config file (e.g.,
>> > > +	 * /etc/sysconfig/network-scripts/ifcfg-eth0): the network init
>> > program
>> > > +	 * ignores any static IP addr information once there is
>> > > +	 * BOOTPROTO=dhcp; as a result, IPv6-only injection can't work.
>> > > +	 *
>> > > +	 * In the case of IPv6-only injection, BOOTPROTO=dhcp doesn't affect
>> > > +	 * Ubuntu because it's ignored by the Ubuntu version of
>> > > +	 * hv_set_ifconfig and it doesn't seem to have special meaning in
>> > > +	 * Ubuntu.
>> > > +	 */
>> >
>> > I just checked and adding "IPV6ADDR=something" when
>> "BOOTPROTO=dhcp"
>> > works for me with both RHEL7 and Fedora21.
>> It doesn't work in my side. :-(
>> Running 'ifup eth0' shows some errors(I use "set -x")
>> ...
>> + /sbin/dhclient -H localhost -1 -q -lf /var/lib/dhclient/dhclient--eth0.lease -pf
>> /var/run/dhclient-eth0.pid eth0
>> grep: /etc/sysconfig/network-scripts/ifcfg-eth0: Permission dinied.
> BTW, I run with root, and
> 'chown 777 /etc/sysconfig/network-scripts/ifcfg-eth0" doesn't help.
>

s,chown,chmod, :-) But it won't help in case of SELinux mislabeling.

> Thanks,
> -- Dexuan

-- 
  Vitaly
--
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