> On 18 Oct 2023, at 18:43, Ilya Maximets via discuss
> <[email protected]> wrote:
>
> On 10/18/23 16:24, Vladislav Odintsov wrote:
>> Hi Ilya,
>>
>> thanks for your response!
>>
>>> On 18 Oct 2023, at 15:59, Ilya Maximets via discuss
>>> <[email protected]> wrote:
>>>
>>> On 10/17/23 16:30, Vladislav Odintsov via discuss wrote:
>>>> Hi,
>>>>
>>>> I’m testing OVS hardware offload with tc flower with Mellanox/NVidia
>>>> ConnectX-6 Dx smartnic and see next warning in ovs-vswitchd log:
>>>>
>>>> 2023-10-17T14:23:15.116Z|00386|tc(handler20)|WARN|Kernel flower
>>>> acknowledgment does not match request! Set dpif_netlink to dbg to see
>>>> which rule caused this error.
>>>>
>>>> With dpif_netlink debug logs enabled, after this message appears two
>>>> additional lines:
>>>>
>>>> 2023-10-17T14:23:15.117Z|00387|dpif_netlink(handler20)|DBG|added flow
>>>> 2023-10-17T14:23:15.117Z|00388|dpif_netlink(handler20)|DBG|system@ovs-system:
>>>> put[create] ufid:d8a3ab6d-77d1-4574-8bbf-634b01a116f3
>>>> recirc_id(0),dp_hash(0/0),skb_priority(0/0),tunnel(tun_id=0x10,src=10.1.0.105,dst=10.1.0.109,ttl=64/0,tp_src=59507/0,tp_dst=6081/0,geneve({class=0x102,type=0x80,len=4,0x60002}),flags(-df+csum+key)),in_port(4),skb_mark(0/0),ct_state(0/0x2f),ct_zone(0/0),ct_mark(0/0),ct_label(0/0x3),eth(src=00:00:ba:a4:6e:ad,dst=00:01:ba:a4:6e:ad),eth_type(0x0800),ipv4(src=172.32.2.4/0.0.0.0,dst=172.32.1.4/0.0.0.0,proto=1,tos=0/0x3,ttl=63/0,frag=no),icmp(type=8/0,code=0/0),
>>>>
>>>> actions:set(tunnel(tun_id=0xff0011,src=10.1.0.109,dst=10.1.1.18,ttl=64,tp_src=59507,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x18000b}),flags(df|csum|key))),4
>>>>
>>>
>>> Could you also enable debug logs for 'tc' module in OVS?
>>> It shoudl give more infomation about where exactly is the
>>> difference between what OVS asked for and what the kenrel
>>> reported back.
>>>
>>> In general this warning typically signifies a kernel bug,
>>> but it could be that OVS doesn't format something correctly
>>> as well.
>>
>> With enabled tc logs I see mismatches in expected/real keys and actions:
>>
>> 2023-10-18T13:33:35.882Z|00118|tc(handler21)|DBG|tc flower compare failed
>> action compare
>> Expected Mask:
>> 00000000 ff ff 00 00 ff ff ff ff-ff ff ff ff ff ff ff ff
>> 00000030 00 00 2f 00 00 00 00 00-00 00 00 00 00 00 00 00
>> 00000040 03 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
>> 00000050 00 00 00 00 ff ff ff ff-00 00 00 00 00 00 00 00
>> 00000060 00 00 00 00 ff 00 00 00-00 00 00 00 00 00 00 00
>> 00000090 00 00 00 00 00 00 00 00-ff ff ff ff ff ff ff ff
>> 000000c0 ff 00 00 00 ff ff 00 00-ff ff ff ff ff ff ff ff
>> 000000d0 08 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
>> 000000e0 ff ff ff 01 ff ff ff ff-00 00 00 00 00 00 00 00
>>
>> Received Mask:
>> 00000000 ff ff 00 00 ff ff ff ff-ff ff ff ff ff ff ff ff
>> 00000030 00 00 2f 00 00 00 00 00-00 00 00 00 00 00 00 00
>> 00000040 03 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
>> 00000050 00 00 00 00 ff ff ff ff-00 00 00 00 00 00 00 00
>> 00000060 00 00 00 00 ff 00 00 00-00 00 00 00 00 00 00 00
>> 00000090 00 00 00 00 00 00 00 00-ff ff ff ff ff ff ff ff
>> 000000c0 ff 00 00 00 ff ff 00 00-ff ff ff ff ff ff ff ff
>> 000000d0 08 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
>> 000000e0 ff ff ff 01 ff ff ff ff-00 00 00 00 00 00 00 00
>>
>> Expected Key:
>> 00000000 08 06 00 00 ff ff ff ff-ff ff 00 00 ba a4 6e ad
>> 00000050 a9 fe 64 01 a9 fe 64 03-00 00 ba a4 6e ad 00 00 <— mismatch in
>> this line
>> 00000060 00 00 00 00 01 00 00 00-00 00 00 00 00 00 00 00
>> 00000090 00 00 00 00 00 00 00 00-0a 01 00 68 0a 01 00 6d
>> 000000c0 00 40 c0 5b 17 c1 00 00-00 00 00 00 00 00 00 10 <— mismatch in
>> this line
>> 000000d0 08 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
>> 000000e0 01 02 80 01 00 03 00 02-00 00 00 00 00 00 00 00
>>
>> Received Key:
>> 00000000 08 06 00 00 ff ff ff ff-ff ff 00 00 ba a4 6e ad
>> 00000050 00 00 00 00 a9 fe 64 03-00 00 00 00 00 00 00 00 <— mismatch in
>> this line
>> 00000060 00 00 00 00 01 00 00 00-00 00 00 00 00 00 00 00
>> 00000090 00 00 00 00 00 00 00 00-0a 01 00 68 0a 01 00 6d
>> 000000c0 00 00 00 00 17 c1 00 00-00 00 00 00 00 00 00 10 <— mismatch in
>> this line
>> 000000d0 08 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
>> 000000e0 01 02 80 01 00 03 00 02-00 00 00 00 00 00 00 00
>
> These are not very important, it is expected that the kernel clears out
> fields that are not coverd by a mask. We do not have the difference
> in the masks and we do not have a diference in the masked keys, so that
> is fine.
>
>>
>> Expected Masked Key:
>> 00000000 08 06 00 00 ff ff ff ff-ff ff 00 00 ba a4 6e ad
>> 00000050 00 00 00 00 a9 fe 64 03-00 00 00 00 00 00 00 00
>> 00000060 00 00 00 00 01 00 00 00-00 00 00 00 00 00 00 00
>> 00000090 00 00 00 00 00 00 00 00-0a 01 00 68 0a 01 00 6d
>> 000000c0 00 00 00 00 17 c1 00 00-00 00 00 00 00 00 00 10
>> 000000d0 08 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
>> 000000e0 01 02 80 01 00 03 00 02-00 00 00 00 00 00 00 00
>>
>> Received Masked Key:
>> 00000000 08 06 00 00 ff ff ff ff-ff ff 00 00 ba a4 6e ad
>> 00000050 00 00 00 00 a9 fe 64 03-00 00 00 00 00 00 00 00
>> 00000060 00 00 00 00 01 00 00 00-00 00 00 00 00 00 00 00
>> 00000090 00 00 00 00 00 00 00 00-0a 01 00 68 0a 01 00 6d
>> 000000c0 00 00 00 00 17 c1 00 00-00 00 00 00 00 00 00 10
>> 000000d0 08 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00
>> 000000e0 01 02 80 01 00 03 00 02-00 00 00 00 00 00 00 00
>>
>> Action 0 mismatch:
>
> We do have the difference in the actions, that is the main issue here.
>
>> - Expected Action:
>> 0x1000000000000000000000000ff0011c05b17c1004000000a01006d0a010112000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000010280010018000b00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000
>> - Received Action:
>> 0x1000000000000000000000000ff0011000017c1004000000a01006d0a010112000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000010280010018000b00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000
>> 2023-10-18T13:33:35.882Z|00119|tc(handler21)|WARN|Kernel flower
>> acknowledgment does not match request! Set dpif_netlink to dbg to see which
>> rule caused this error.
>> 2023-10-18T13:33:35.882Z|00120|dpif_netlink(handler21)|DBG|added flow
>> 2023-10-18T13:33:35.882Z|00121|dpif_netlink(handler21)|DBG|system@ovs-system:
>> put[create] ufid:dc160f96-84ef-4bf7-919a-3729c19382b8
>> recirc_id(0),dp_hash(0/0),skb_priority(0/0),tunnel(tun_id=0x10,src=10.1.0.104,dst=10.1.0.109,ttl=64/0,tp_src=49243/0,tp_dst=6081/0,geneve({class=0x102,type=0x80,len=4,0x30002}),flags(-df+csum+key)),in_port(4),skb_mark(0/0),ct_state(0/0x2f),ct_zone(0/0),ct_mark(0/0),ct_label(0/0x3),eth(src=00:00:ba:a4:6e:ad,dst=ff:ff:ff:ff:ff:ff),eth_type(0x0806),arp(sip=169.254.100.1/0.0.0.0,tip=169.254.100.3,op=1,sha=00:00:ba:a4:6e:ad/00:00:00:00:00:00,tha=00:00:00:00:00:00/00:00:00:00:00:00),
>>
>> actions:set(tunnel(tun_id=0xff0011,src=10.1.0.109,dst=10.1.1.18,ttl=64,tp_src=49243,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x18000b}),flags(df|csum|key))),4
>>
>> Is there any documentation or maybe code in OVS (or kernel, etc) to read to
>> understand the reason for this mismatch in more details?
>> Or, maybe you have a good next steps to advice?
>
> Unfortunately, that is just a direct hex dump of the tc_action structure:
>
> https://github.com/openvswitch/ovs/blob/c29ba54018520f957c48d947325ed50c9442b831/lib/tc.h#L233
>
> The only way to figure out what exactly is wrong here is to find which
> bytes in the expected and received actions are different and find which
> field in the tc_action structure the difference is in. That's not fun.
>
> The following patch may make the spotting the difference a little easier:
>
> diff --git a/lib/tc.c b/lib/tc.c
> index f85703633..39fe9c5cc 100644
> --- a/lib/tc.c
> +++ b/lib/tc.c
> @@ -3875,12 +3875,13 @@ log_tc_flower_match(const char *msg,
>
> for (int i = 0; i < a->action_count; i++, action_a++, action_b++) {
> if (memcmp(action_a, action_b, sizeof *action_a)) {
> - ds_put_format(&s,
> - "\nAction %d mismatch:\n - Expected Action: ",
> - i);
> - ds_put_hex(&s, action_a, sizeof *action_a);
> + ds_put_format(&s, "\nAction %d mismatch:"
> + "\n - Expected Action:\n", i);
> + ds_put_sparse_hex_dump(&s, action_a, sizeof *action_a,
> + 0, false);
> ds_put_cstr(&s, "\n - Received Action: ");
> - ds_put_hex(&s, action_b, sizeof *action_b);
> + ds_put_sparse_hex_dump(&s, action_b, sizeof *action_b,
> + 0, false);
> }
> }
> }
> ---
>
> You may also need to use something like pahole on your OVS binary
> to see the exact layout of the structure.
Unfortunately, I’m not experienced with pahole, so need some assistance from
you if possible.
I’ve built OVS with modified RPM spec file adding '--with-debug' to configure
flags.
Then I’ve installed the rebuilt openvswitch and openvswitch-debuginfo RPMs and
ran pahole, but got error "unable to find type":
# pahole -C tc_action
/usr/lib/debug/usr/lib64/libopenvswitch-3.1.so.0.0.3-3.1.3-1.el8_4.x86_64.debug
WARNING: DW_TAG_partial_unit used, some types will not be considered!
Probably this was optimized using a tool like 'dwz'
A future version of pahole will support this.
pahole: type 'tc_action' not found
I’m sure there should be a trivial mistake, but I couldn’t solve it.
>
>
> The difference seems to be in these 2 bytes:
>
> 0x 1000000000000000000000000ff0011c05b17c1004000000a01006d0a010112
> 0x 1000000000000000000000000ff0011000017c1004000000a01006d0a010112
> ^^^^
> So, 16 byte offset within the structure. Let's guess it is an encap
> field. Then it must be encap.tp_src. And that checks out, because
> 0xc05b equals 49243, which is indeed a source port for the tunnel
> encapsulation.
>
> So, it seems like for some reason kernel decided to not populate
> the tunnel source port in the tunnel key after decapsulation,
> even though it was asked to do so.
>
> @Eelco, @Marcelo, do you have some thoughts on that?
>
>>
>>>
>>>> The test system is a CentOS 8.4 with installed elrepo mainline kernel
>>>> 6.5.5, OVS 3.1.1 and OVN 22.09.1.
>>>
>>> 3.1.1 contains some known bugs in TC offloading code, so
>>> you may want to try the latest 3.1.3. Though it's unlikely
>>> to be related ot the issue you're facing here.
>>
>> I’ve upgraded OVS to 3.1.3 to eliminate the possible known OVS bugs, but
>> this didn’t help.
>> Same warnings and mismatches still are reported.
>>
>>>
>>>> The workload I’m testing is a L3 Gateway for OVN IC (cross-az traffic).
>>>>
>>>> tc monitor at the same moment outputs next:
>>>>
>>>> replaced filter dev genev_sys_6081 ingress protocol ip pref 2 flower chain
>>>> 0 handle 0x3
>>>> dst_mac 00:01:ba:a4:6e:ad
>>>> src_mac 00:00:ba:a4:6e:ad
>>>> eth_type ipv4
>>>> ip_proto icmp
>>>> ip_tos 0/0x3
>>>> enc_dst_ip 10.1.0.109
>>>> enc_src_ip 10.1.0.105
>>>> enc_key_id 16
>>>> enc_dst_port 6081
>>>> enc_tos 0
>>>> geneve_opts 0102:80:00060002/ffff:ff:ffffffff
>>>> ip_flags nofrag
>>>> ct_state -trk-new-est
>>>> ct_label 00000000000000000000000000000000/030000000000000000000000000000
>>>> in_hw in_hw_count 2
>>>> action order 1: tunnel_key unset pipe
>>>> index 5 ref 1 bind 1
>>>> no_percpu
>>>> used_hw_stats delayed
>>>>
>>>> action order 2: tunnel_key set
>>>> src_ip 10.1.0.109
>>>> dst_ip 10.1.1.18
>>>> key_id 16711697
>>>> dst_port 6081
>
> And we can see here, TC only populates the dst_port, not the src_port
> into the tunnel key, even though the source port was in the tunnel(set())
> action OVS requested.
>
>>>> geneve_opts 0102:80:0018000b
>>>> csum
>>>> ttl 64 pipe
>>>> index 6 ref 1 bind 1
>>>> no_percpu
>>>> used_hw_stats delayed
>>>>
>>>> action order 3: mirred (Egress Redirect to device genev_sys_6081) stolen
>>>> index 3 ref 1 bind 1
>>>> cookie 6daba3d87445d1774b63bf8bf316a101
>>>> no_percpu
>>>> used_hw_stats delayed
>>>>
>>>>
>>>> Despite of these warnings, the flow is finally offloaded and the traffic
>>>> traverses this gw node well, only first packets of an ICMP sequence reach
>>>> CPU (seen in tcpdump):
>>>
>>> The warning is a warning. It doesn't prevent the flow to be installed.
>>> Though the installed flow may be incorrect and the traffic may be
>>> handled in the wrong way. Enabling debug logs for tc should show what
>>> exacltly is wrong.
>>>
>>>>
>>>> # ovs-appctl dpctl/dump-flows type=offloaded
>>>> tunnel(tun_id=0x10,src=10.1.0.107,dst=10.1.0.109,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x50002}),flags(+key)),ct_state(-new-est-rel-rpl-trk),ct_label(0/0x3),recirc_id(0),in_port(4),eth(src=00:00:ba:a4:6e:ad,dst=00:01:ba:a4:6e:ad),eth_type(0x0800),ipv4(proto=1,tos=0/0x3,frag=no),
>>>> packets:3192, bytes:312816, used:1.240s,
>>>> actions:set(tunnel(tun_id=0xff0011,src=10.1.0.109,dst=10.1.1.18,ttl=64,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x18000b}),flags(csum|key))),4
>>>> tunnel(tun_id=0xff0011,src=10.1.1.18,dst=10.1.0.109,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0xb0018}),flags(+key)),ct_state(-new-est-rel-rpl-trk),ct_label(0/0x3),recirc_id(0),in_port(4),eth(src=00:01:ba:a4:6e:ad,dst=00:00:ba:a4:6e:ad),eth_type(0x0800),ipv4(src=172.32.1.0/255.255.255.0,dst=172.32.0.4,proto=1,tos=0/0x3,ttl=63,frag=no),
>>>> packets:3192, bytes:312816, used:1.240s,
>>>> actions:set(tunnel(tun_id=0x11,src=10.1.0.109,dst=10.1.0.107,ttl=64,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x10002}),flags(csum|key))),set(eth(src=d0:fe:00:00:00:1d,dst=0a:00:66:ec:f7:40)),set(ipv4(ttl=62)),4
>>>> tunnel(tun_id=0x10,src=10.1.0.105,dst=10.1.0.109,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x60002}),flags(+key)),ct_state(-new-est-rel-rpl-trk),ct_label(0/0x3),recirc_id(0),in_port(4),eth(src=00:00:ba:a4:6e:ad,dst=00:01:ba:a4:6e:ad),eth_type(0x0800),ipv4(proto=1,tos=0/0x3,frag=no),
>>>> packets:293, bytes:28714, used:1.240s,
>>>> actions:set(tunnel(tun_id=0xff0011,src=10.1.0.109,dst=10.1.1.18,ttl=64,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x18000b}),flags(csum|key))),4
>>>> tunnel(tun_id=0xff0011,src=10.1.1.18,dst=10.1.0.109,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0xb0018}),flags(+key)),ct_state(-new-est-rel-rpl-trk),ct_label(0/0x3),recirc_id(0),in_port(4),eth(src=00:01:ba:a4:6e:ad,dst=00:00:ba:a4:6e:ad),eth_type(0x0800),ipv4(src=172.32.1.0/255.255.255.0,dst=172.32.2.4,proto=1,tos=0/0x3,ttl=63,frag=no),
>>>> packets:293, bytes:28714, used:1.240s,
>>>> actions:set(tunnel(tun_id=0x17,src=10.1.0.109,dst=10.1.0.105,ttl=64,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x10002}),flags(csum|key))),set(eth(src=d0:fe:00:00:00:8e,dst=0a:00:40:c2:76:a0)),set(ipv4(ttl=62)),4
>>>> tunnel(tun_id=0x10,src=10.1.0.104,dst=10.1.0.109,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x30002}),flags(+key)),ct_state(-new-est-rel-rpl-trk),ct_label(0/0x3),recirc_id(0),in_port(4),eth(src=00:00:ba:a4:6e:ad,dst=00:01:ba:a4:6e:ad),eth_type(0x0800),ipv4(proto=6,tos=0/0x3,frag=no),
>>>> packets:0, bytes:0, used:never,
>>>> actions:set(tunnel(tun_id=0xff0011,src=10.1.0.109,dst=10.1.1.18,ttl=64,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x18000b}),flags(csum|key))),4
>>>> tunnel(tun_id=0xff0011,src=10.1.1.18,dst=10.1.0.109,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0xb0018}),flags(+key)),ct_state(-new-est-rel-rpl-trk),ct_label(0/0x3),recirc_id(0),in_port(4),eth(src=00:01:ba:a4:6e:ad,dst=00:00:ba:a4:6e:ad),eth_type(0x0800),ipv4(src=169.254.96.0/255.255.252.0,dst=169.254.99.0,proto=6,tos=0/0x3,ttl=254,frag=no),
>>>> packets:0, bytes:0, used:never,
>>>> actions:set(tunnel(tun_id=0xe,src=10.1.0.109,dst=10.1.0.104,ttl=64,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x20001}),flags(csum|key))),set(eth(src=10:00:ba:a4:6e:ad,dst=02:00:ba:a4:6e:ad)),set(ipv4(ttl=253)),4
>>>>
>>>>
>>>> I’m wonder, whether this is a known issue (I couldn’t find any related
>>>> messages searching in internet).
>>>> Could someone give any advice/help with this?
>>>>
>>>> Thanks in advance.
>>>>
>>>> Regards,
>>>> Vladislav Odintsov
>>>
>>> _______________________________________________
>>> discuss mailing list
>>> [email protected] <mailto:[email protected]>
>>> <mailto:[email protected]>
>>> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
>>> <https://mail.openvswitch.org/mailman/listinfo/ovs-discuss>
>>
>>
>> Regards,
>> Vladislav Odintsov
>>
>
> _______________________________________________
> discuss mailing list
> [email protected] <mailto:[email protected]>
> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
Regards,
Vladislav Odintsov
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