Re: [ovs-discuss] GRE with link-local remote_ip: "not a valid IPv6 address"
Am 28.08.19 um 19:26 schrieb Ben Pfaff: > On Tue, Aug 27, 2019 at 12:09:14PM +0200, Sven Gebauer wrote: >> Hi all, >> >> I'm trying to create a GRE tunnel with an IPv6 link-local address as the >> remote_ip. According to the changelog, this should be supported since >> v2.8.0. However... > > IPv6 link-local addresses are supported for use in contexts where OVS is > creating a socket, most notably for connections to controllers. In > other contexts, there's nowhere for OVS to put the scope, so it can't > support it. In this case, the kernel flow structure doesn't have a > scope in it, so there's nothing that userspace OVS can do about it. If > this feature were to be added, it would require adding the scope > (probably in multiple places) to that kernel flow structure, which would > probably be difficult for reasons of backward compatibility and > coordination with (and justification to) the kernel network stack > developers. > Ah, i see. Thank you! ___ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
Re: [ovs-discuss] GRE with link-local remote_ip: "not a valid IPv6 address"
Am 27.08.19 um 17:12 schrieb Gregory Rose: >> 2019-08-22T07:22:09.545Z|00050|socket_util|ERR|"fe80::1%ens9" is not a valid >> IPv6 address > > Remove the '%ens9' from your IPv6 address, that's not valid. > Then how do i specify the scope (i.e. interface) of a link-local address? The `ip` command has the `dev` option for this, but i couldn't find anything like that in the OVS docs. The changelog [0] says that the %-Notation is supported since v2.8. Regards, Sven [0] https://github.com/openvswitch/ovs/blob/5c7ba90d8189ee7b35a1723d5a76dc205720af50/NEWS#L353 ___ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
[ovs-discuss] GRE with link-local remote_ip: "not a valid IPv6 address"
Hi all, I'm trying to create a GRE tunnel with an IPv6 link-local address as the remote_ip. According to the changelog, this should be supported since v2.8.0. However... root@vpntest4:~# ovs-vsctl add-br ovsbr0 root@vpntest4:~# ovs-vsctl add-port ovsbr0 ovsbr0-gre -- set interface ovsbr0-gre type=ip6gre options:remote_ip='fe80::1%ens9' ovs-vsctl: Error detected while setting up 'ovsbr0-gre': ovsbr0-gre: bad ip6gre 'remote_ip' ovsbr0-gre: ip6gre type requires valid 'remote_ip' argument. See ovs-vswitchd log for details. ovs-vsctl: The default log directory is "/var/log/openvswitch". root@vpntest4:~# tail /var/log/openvswitch/ovs-vswitchd.log 2019-08-22T07:22:09.545Z|00050|socket_util|ERR|"fe80::1%ens9" is not a valid IPv6 address 2019-08-22T07:22:09.545Z|00051|netdev_vport|WARN|ovsbr0-gre: bad ip6gre 'remote_ip' ovsbr0-gre: ip6gre type requires valid 'remote_ip' argument 2019-08-22T07:22:09.545Z|00052|netdev|WARN|ovsbr0-gre: could not set configuration (Invalid argument) Regular (non-link-local) IPv6 addresses work fine. Setting up a tunnel with the `ip` command like this also works: # ip link add test-gre type ip6gretap remote fe80::1 dev ens9 Any idea what I'm doing wrong here? Or is this a bug? I'm using Open vSwitch 2.11.0 on Ubuntu 19.04, kernel version 5.0.0. Thanks Sven ___ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
