On Tue, Jun 04, 2019 at 06:08:00PM +0000, Eli Britstein wrote: > > On 6/4/2019 8:24 PM, Ben Pfaff wrote: > > On Tue, Jun 04, 2019 at 03:13:02PM +0000, Eli Britstein wrote: > >> Hello, > >> > >> I would like to configure a GRE tunnel over IPv6, on a Linux system. > >> However, I encounter the following: > >> > >> My command: > >> ovs-vsctl add-port br1 gre6 -- set interface gre6 type=ip6gre > >> options:remote_ip= 2001:db8:0:f102::11 options:key=55 > >> > >> Output: > >> ovs-vsctl: Error detected while setting up 'gre6': could not add network > >> device gre6 to ofproto (Address family not supported by protocol). See > >> ovs-vswitchd log for details. > >> ovs-vsctl: The default log directory is "/var/log/openvswitch". > >> > >> In the log: > >> bridge|WARN|could not add network device gre6 to ofproto (Address family > >> not supported by protocol) > >> > >> I notice that if I want to define a ip6gretap with “ip link”, there is a > >> need to use “-6” option, to set the correct family. > >> > >> Is there a way to note the correct family (though I think should be > >> implicit by “ip6gre”)? Or maybe some other configuration? > > OVS doesn't have an "ip6gre" interface type. Just use "gre". > > I see it does in lib/netdev-vport.c, line 1222. Isn't that ip6gre?
Um, that's weird. We don't document it. I thought for sure that we tried to make our "regular" tunnels just accept both IPv4 and IPv6 addresses. Greg, I see that you're the author of ip6gre (and ip6erspan). Can you comment on the intentions? If ip6gre is indeed the right way to configure a GRE-over-IPv6 tunnel, then we should document it. I guess the same goes for ip6erspan since I don't see any documentation for that either. Also, can you take a look at Eli's report below and perhaps give him some tips? > Anyway, indeed trying with just "gre" the configuration passes OK. > However, I don't see any traffic on the other machine. > > Port "gre6" > Interface "gre6" > type: gre > options: {key="55", local_ip="2001:db8:0:f102::f0", > remote_ip="2001:db8:0:f102::f1"} > > $ ping 2001:db8:0:f102::f1 > PING 2001:db8:0:f102::f1(2001:db8:0:f102::f1) 56 data bytes > 64 bytes from 2001:db8:0:f102::f1: icmp_seq=1 ttl=64 time=0.440 ms > 64 bytes from 2001:db8:0:f102::f1: icmp_seq=2 ttl=64 time=0.072 ms > > I even configured an explicit OF rule to redirect to the gre6 port. I > see it is hit, but still no traffic. > > Do I have to configure explicit routes or something of that kind? > _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss