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
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