src/libvirt_private.syms | 3 + src/network/bridge_driver.c | 25 ++++--- src/util/virnetdev.c | 19 ++++++ src/util/virnetdev.h | 2 + src/util/virnetdevip.c | 158 ++++++++++++++++++++++++++++++++++++++++++++ src/util/virnetdevip.h | 1 + src/util/virnetlink.c | 145 ++++++++++++++++++++++++++++++---------- src/util/virnetlink.h | 9 +++ 8 files changed, 319 insertions(+), 43 deletions(-)
Hi Laine, all, Here is the v2 of my series. The changes are: * Add a commit to create a virNetDevGetName() function * Fix Laine's comments Cédric Bosdonnat (5): util: extract the request sending code from virNetlinkCommand() util: add virNetlinkDumpCommand() bridge_driver.c: more uses of SYSCTL_PATH util: add virNetDevGetName() function network: check accept_ra before enabling ipv6 forwarding src/libvirt_private.syms | 3 + src/network/bridge_driver.c | 25 ++++--- src/util/virnetdev.c | 19 ++++++ src/util/virnetdev.h | 2 + src/util/virnetdevip.c | 158 ++++++++++++++++++++++++++++++++++++++++++++ src/util/virnetdevip.h | 1 + src/util/virnetlink.c | 145 ++++++++++++++++++++++++++++++---------- src/util/virnetlink.h | 9 +++ 8 files changed, 319 insertions(+), 43 deletions(-) -- 2.11.0 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Hi Cédric, I have tested it, it works well. But the interface name will repeat 2 times. Please help to confirm this, and if below test for a single port host is enough? # cat /proc/sys/net/ipv6/conf/enp0s25/accept_ra 1 enable network default with ipv6 ip section # virsh net-start default error: Failed to start network default error: internal error: Check the host setup: enabling IPv6 forwarding with RA routes without accept_ra set to 2 is likely to cause routes loss. Interfaces to look at: enp0s25, enp0s25 # echo 2 > /proc/sys/net/ipv6/conf/enp0s25/accept_ra # virsh net-start default Network default started try create: # virsh net-create default.xml error: Failed to create network from default.xml error: internal error: Check the host setup: enabling IPv6 forwarding with RA routes without accept_ra set to 2 is likely to cause routes loss. Interfaces to look at: enp0s25, enp0s25 On Wed, Mar 15, 2017 at 10:45 PM, Cédric Bosdonnat <cbosdonnat@suse.com> wrote: > Hi Laine, all, > > Here is the v2 of my series. The changes are: > > * Add a commit to create a virNetDevGetName() function > * Fix Laine's comments > > Cédric Bosdonnat (5): > util: extract the request sending code from virNetlinkCommand() > util: add virNetlinkDumpCommand() > bridge_driver.c: more uses of SYSCTL_PATH > util: add virNetDevGetName() function > network: check accept_ra before enabling ipv6 forwarding > > src/libvirt_private.syms | 3 + > src/network/bridge_driver.c | 25 ++++--- > src/util/virnetdev.c | 19 ++++++ > src/util/virnetdev.h | 2 + > src/util/virnetdevip.c | 158 ++++++++++++++++++++++++++++++ > ++++++++++++++ > src/util/virnetdevip.h | 1 + > src/util/virnetlink.c | 145 ++++++++++++++++++++++++++++++ > ---------- > src/util/virnetlink.h | 9 +++ > 8 files changed, 319 insertions(+), 43 deletions(-) > > -- > 2.11.0 > > -- > libvir-list mailing list > libvir-list@redhat.com > https://www.redhat.com/mailman/listinfo/libvir-list -- Best Regards, Yalan Zhang IRC: yalzhang Internal phone: 8389413 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Yalan 你好 On Mon, 2017-04-17 at 17:30 +0800, Yalan Zhang wrote: > I have tested it, it works well. But the interface name will repeat 2 times. > Please help to confirm this, and if below test for a single port host is enough? > > # cat /proc/sys/net/ipv6/conf/enp0s25/accept_ra > 1 > > enable network default with ipv6 ip section > > # virsh net-start default > error: Failed to start network default > error: internal error: Check the host setup: enabling IPv6 forwarding with RA routes without accept_ra set to 2 is > likely to cause routes loss. Interfaces to look at: enp0s25, enp0s25 Just to help me confirm my intuition: do you have several RA routes defined for the same device? > # echo 2 > /proc/sys/net/ipv6/conf/enp0s25/accept_ra > > # virsh net-start default > Network default started > > try create: > > # virsh net-create default.xml > error: Failed to create network from default.xml > error: internal error: Check the host setup: enabling IPv6 forwarding with RA routes without accept_ra set to 2 is > likely to cause routes loss. Interfaces to look at: enp0s25, enp0s25 This one sounds weird: if the accept_ra is set to 2 as you report you did, you shouldn't get that error. -- Cedric > On Wed, Mar 15, 2017 at 10:45 PM, Cédric Bosdonnat <cbosdonnat@suse.com> wrote: > > Hi Laine, all, > > > > Here is the v2 of my series. The changes are: > > > > * Add a commit to create a virNetDevGetName() function > > * Fix Laine's comments > > > > Cédric Bosdonnat (5): > > util: extract the request sending code from virNetlinkCommand() > > util: add virNetlinkDumpCommand() > > bridge_driver.c: more uses of SYSCTL_PATH > > util: add virNetDevGetName() function > > network: check accept_ra before enabling ipv6 forwarding > > > > src/libvirt_private.syms | 3 + > > src/network/bridge_driver.c | 25 ++++--- > > src/util/virnetdev.c | 19 ++++++ > > src/util/virnetdev.h | 2 + > > src/util/virnetdevip.c | 158 ++++++++++++++++++++++++++++++++++++++++++++ > > src/util/virnetdevip.h | 1 + > > src/util/virnetlink.c | 145 ++++++++++++++++++++++++++++++---------- > > src/util/virnetlink.h | 9 +++ > > 8 files changed, 319 insertions(+), 43 deletions(-) > > > > -- > > 2.11.0 > > > > -- > > libvir-list mailing list > > libvir-list@redhat.com > > https://www.redhat.com/mailman/listinfo/libvir-list > > > -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Hi Cédric,
您好 ：）
I'm sorry that I missed the mail.
But currently I can not reproduce it.
For the error by net-create, it is executed when I set accept_ra to 1.
I have just test on libvirt-3.2.0-4.el7.x86_64, the behavior changes, it
seems like there is no check for accept_ra before start a network with ipv6.
1. define and start a network with ipv6 settings
# virsh net-dumpxml default6
<network>
<name>default6</name>
<uuid>c502d02c-fbd0-49d9-91e4-0fcf0ef159d0</uuid>
<forward mode='nat'/>
<bridge name='virbr4' stp='on' delay='0'/>
<mac address='52:54:00:04:d5:3c'/>
<ip address='192.168.10.1' netmask='255.255.255.0'>
<dhcp>
<range start='192.168.10.2' end='192.168.10.254'/>
</dhcp>
</ip>
<ip family='ipv6' address='2001:db8:ca2:2::1' prefix='64'>
<dhcp>
<range start='2001:db8:ca2:2:1::10' end='2001:db8:ca2:2:1::ff'/>
</dhcp>
</ip>
</network>
# cat /proc/sys/net/ipv6/conf/enp0s25/accept_ra
1
# virsh net-start default6 =====> the network can start as well with
accept_ra=1
Network default6 started
It seems that the "virNetDevIPGetAcceptRA()" in patch "network: check
accept_ra before enabling ipv6 forwarding" with commit 00d28a78 is not
executed when I start a network. Please help to check, Thank you.
Best Regards,
Yalan Zhang
IRC: yalzhang
Internal phone: 8389413
On Tue, Apr 18, 2017 at 5:54 PM, Cedric Bosdonnat <cbosdonnat@suse.com>
wrote:
> Yalan 你好
>
> On Mon, 2017-04-17 at 17:30 +0800, Yalan Zhang wrote:
> > I have tested it, it works well. But the interface name will repeat 2
> times.
> > Please help to confirm this, and if below test for a single port host is
> enough?
> >
> > # cat /proc/sys/net/ipv6/conf/enp0s25/accept_ra
> > 1
> >
> > enable network default with ipv6 ip section
> >
> > # virsh net-start default
> > error: Failed to start network default
> > error: internal error: Check the host setup: enabling IPv6 forwarding
> with RA routes without accept_ra set to 2 is
> > likely to cause routes loss. Interfaces to look at: enp0s25, enp0s25
>
> Just to help me confirm my intuition: do you have several RA routes defined
> for the same device?
>
> > # echo 2 > /proc/sys/net/ipv6/conf/enp0s25/accept_ra
> >
> > # virsh net-start default
> > Network default started
> >
> > try create:
> >
> > # virsh net-create default.xml
> > error: Failed to create network from default.xml
> > error: internal error: Check the host setup: enabling IPv6 forwarding
> with RA routes without accept_ra set to 2 is
> > likely to cause routes loss. Interfaces to look at: enp0s25, enp0s25
>
> This one sounds weird: if the accept_ra is set to 2 as you report you did,
> you shouldn't get that error.
>
> --
> Cedric
>
> > On Wed, Mar 15, 2017 at 10:45 PM, Cédric Bosdonnat <cbosdonnat@suse.com>
> wrote:
> > > Hi Laine, all,
> > >
> > > Here is the v2 of my series. The changes are:
> > >
> > > * Add a commit to create a virNetDevGetName() function
> > > * Fix Laine's comments
> > >
> > > Cédric Bosdonnat (5):
> > > util: extract the request sending code from virNetlinkCommand()
> > > util: add virNetlinkDumpCommand()
> > > bridge_driver.c: more uses of SYSCTL_PATH
> > > util: add virNetDevGetName() function
> > > network: check accept_ra before enabling ipv6 forwarding
> > >
> > > src/libvirt_private.syms | 3 +
> > > src/network/bridge_driver.c | 25 ++++---
> > > src/util/virnetdev.c | 19 ++++++
> > > src/util/virnetdev.h | 2 +
> > > src/util/virnetdevip.c | 158 ++++++++++++++++++++++++++++++
> ++++++++++++++
> > > src/util/virnetdevip.h | 1 +
> > > src/util/virnetlink.c | 145 ++++++++++++++++++++++++++++++
> ----------
> > > src/util/virnetlink.h | 9 +++
> > > 8 files changed, 319 insertions(+), 43 deletions(-)
> > >
> > > --
> > > 2.11.0
> > >
> > > --
> > > libvir-list mailing list
> > > libvir-list@redhat.com
> > > https://www.redhat.com/mailman/listinfo/libvir-list
> >
> >
> >
>
--
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https://www.redhat.com/mailman/listinfo/libvir-list
On Wed, 2017-05-10 at 13:30 +0800, Yalan Zhang wrote: > I'm sorry that I missed the mail. 没关系 > But currently I can not reproduce it. > For the error by net-create, it is executed when I set accept_ra to 1. That sounds more normal. net-create and net-start are triggering the same code in the end. > I have just test on libvirt-3.2.0-4.el7.x86_64, the behavior changes, it seems like there is no check for accept_ra > before start a network with ipv6. > > 1. define and start a network with ipv6 settings > # virsh net-dumpxml default6 > <network> > <name>default6</name> > <uuid>c502d02c-fbd0-49d9-91e4-0fcf0ef159d0</uuid> > <forward mode='nat'/> > <bridge name='virbr4' stp='on' delay='0'/> > <mac address='52:54:00:04:d5:3c'/> > <ip address='192.168.10.1' netmask='255.255.255.0'> > <dhcp> > <range start='192.168.10.2' end='192.168.10.254'/> > </dhcp> > </ip> > <ip family='ipv6' address='2001:db8:ca2:2::1' prefix='64'> > <dhcp> > <range start='2001:db8:ca2:2:1::10' end='2001:db8:ca2:2:1::ff'/> > </dhcp> > </ip> > </network> > > # cat /proc/sys/net/ipv6/conf/enp0s25/accept_ra > 1 > > # virsh net-start default6 =====> the network can start as well with accept_ra=1 > Network default6 started > > It seems that the "virNetDevIPGetAcceptRA()" in patch "network: check accept_ra before enabling ipv6 forwarding" > with commit 00d28a78 is not executed when I start a network. Please help to check, Thank you. It won't complain at all if there is no RA route set on the host. To reproduce, you need to setup a machine acting as an ipv6 router with radvd on the guest network. Do you actually have an RA route for the enp0s25 device? You can check it by running `ip -6 r`. These routes are indicated with 'proto ra' -- Cedric -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
I have no RA route set. I will try, Thank you very much! Best Regards, Yalan Zhang IRC: yalzhang Internal phone: 8389413 On Wed, May 10, 2017 at 3:34 PM, Cedric Bosdonnat <cbosdonnat@suse.com> wrote: > On Wed, 2017-05-10 at 13:30 +0800, Yalan Zhang wrote: > > I'm sorry that I missed the mail. > > 没关系 > > > But currently I can not reproduce it. > > For the error by net-create, it is executed when I set accept_ra to 1. > > That sounds more normal. net-create and net-start are triggering the > same code in the end. > > > I have just test on libvirt-3.2.0-4.el7.x86_64, the behavior changes, it > seems like there is no check for accept_ra > > before start a network with ipv6. > > > > 1. define and start a network with ipv6 settings > > # virsh net-dumpxml default6 > > <network> > > <name>default6</name> > > <uuid>c502d02c-fbd0-49d9-91e4-0fcf0ef159d0</uuid> > > <forward mode='nat'/> > > <bridge name='virbr4' stp='on' delay='0'/> > > <mac address='52:54:00:04:d5:3c'/> > > <ip address='192.168.10.1' netmask='255.255.255.0'> > > <dhcp> > > <range start='192.168.10.2' end='192.168.10.254'/> > > </dhcp> > > </ip> > > <ip family='ipv6' address='2001:db8:ca2:2::1' prefix='64'> > > <dhcp> > > <range start='2001:db8:ca2:2:1::10' end='2001:db8:ca2:2:1::ff'/> > > </dhcp> > > </ip> > > </network> > > > > # cat /proc/sys/net/ipv6/conf/enp0s25/accept_ra > > 1 > > > > # virsh net-start default6 =====> the network can start as well with > accept_ra=1 > > Network default6 started > > > > It seems that the "virNetDevIPGetAcceptRA()" in patch "network: check > accept_ra before enabling ipv6 forwarding" > > with commit 00d28a78 is not executed when I start a network. Please help > to check, Thank you. > > It won't complain at all if there is no RA route set on the host. > To reproduce, you need to setup a machine acting as an ipv6 router > with radvd on the guest network. > > Do you actually have an RA route for the enp0s25 device? You can check > it by running `ip -6 r`. These routes are indicated with 'proto ra' > > -- > Cedric > -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Hi Cédric,
I think I find the machine with a RA route. (It is the original machine in
the first mail)
# ip a show enp0s25
2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
state UP qlen 1000
link/ether 00:24:7e:05:42:32 brd ff:ff:ff:ff:ff:ff
inet 10.66.71.67/23 brd 10.66.71.255 scope global dynamic enp0s25
valid_lft 85595sec preferred_lft 85595sec
inet6 2620:52:0:4246:224:7eff:fe05:4232/64 scope global mngtmpaddr
dynamic
valid_lft 2591915sec preferred_lft 604715sec
inet6 fe80::224:7eff:fe05:4232/64 scope link
valid_lft forever preferred_lft forever
# ip -6 r
unreachable ::/96 dev lo metric 1024 error -113
unreachable ::ffff:0.0.0.0/96 dev lo metric 1024 error -113
unreachable 2002:a00::/24 dev lo metric 1024 error -113
unreachable 2002:7f00::/24 dev lo metric 1024 error -113
unreachable 2002:a9fe::/32 dev lo metric 1024 error -113
unreachable 2002:ac10::/28 dev lo metric 1024 error -113
unreachable 2002:c0a8::/32 dev lo metric 1024 error -113
unreachable 2002:e000::/19 dev lo metric 1024 error -113
2620:52:0:4246::/64 dev enp0s25 proto kernel metric 256 expires 2591970sec
unreachable 3ffe:ffff::/32 dev lo metric 1024 error -113
fe80::/64 dev enp0s25 proto kernel metric 256
default via fe80::26e9:b3ff:fe23:44cd dev enp0s25 proto ra metric 1024
expires 1770sec hoplimit 64
default via fe80::26e9:b3ff:fe0f:654d dev enp0s25 proto ra metric 1024
expires 1657sec hoplimit 64
I think it is because there is 2 items for the single interface enp0s25.
And I don't know why there are 2 link local address. Could you please help?
Thank you~
Best Regards,
Yalan Zhang
IRC: yalzhang
Internal phone: 8389413
On Wed, May 10, 2017 at 3:41 PM, Yalan Zhang <yalzhang@redhat.com> wrote:
> I have no RA route set.
> I will try, Thank you very much!
>
> Best Regards,
> Yalan Zhang
> IRC: yalzhang
> Internal phone: 8389413
>
> On Wed, May 10, 2017 at 3:34 PM, Cedric Bosdonnat <cbosdonnat@suse.com>
> wrote:
>
>> On Wed, 2017-05-10 at 13:30 +0800, Yalan Zhang wrote:
>> > I'm sorry that I missed the mail.
>>
>> 没关系
>>
>> > But currently I can not reproduce it.
>> > For the error by net-create, it is executed when I set accept_ra to 1.
>>
>> That sounds more normal. net-create and net-start are triggering the
>> same code in the end.
>>
>> > I have just test on libvirt-3.2.0-4.el7.x86_64, the behavior changes,
>> it seems like there is no check for accept_ra
>> > before start a network with ipv6.
>> >
>> > 1. define and start a network with ipv6 settings
>> > # virsh net-dumpxml default6
>> > <network>
>> > <name>default6</name>
>> > <uuid>c502d02c-fbd0-49d9-91e4-0fcf0ef159d0</uuid>
>> > <forward mode='nat'/>
>> > <bridge name='virbr4' stp='on' delay='0'/>
>> > <mac address='52:54:00:04:d5:3c'/>
>> > <ip address='192.168.10.1' netmask='255.255.255.0'>
>> > <dhcp>
>> > <range start='192.168.10.2' end='192.168.10.254'/>
>> > </dhcp>
>> > </ip>
>> > <ip family='ipv6' address='2001:db8:ca2:2::1' prefix='64'>
>> > <dhcp>
>> > <range start='2001:db8:ca2:2:1::10' end='2001:db8:ca2:2:1::ff'/>
>> > </dhcp>
>> > </ip>
>> > </network>
>> >
>> > # cat /proc/sys/net/ipv6/conf/enp0s25/accept_ra
>> > 1
>> >
>> > # virsh net-start default6 =====> the network can start as well with
>> accept_ra=1
>> > Network default6 started
>> >
>> > It seems that the "virNetDevIPGetAcceptRA()" in patch "network: check
>> accept_ra before enabling ipv6 forwarding"
>> > with commit 00d28a78 is not executed when I start a network. Please
>> help to check, Thank you.
>>
>> It won't complain at all if there is no RA route set on the host.
>> To reproduce, you need to setup a machine acting as an ipv6 router
>> with radvd on the guest network.
>>
>> Do you actually have an RA route for the enp0s25 device? You can check
>> it by running `ip -6 r`. These routes are indicated with 'proto ra'
>>
>> --
>> Cedric
>>
>
>
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