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Bug #173

closed

Mesh packets on bat0

Added by Oliver Möschen over 11 years ago. Updated almost 8 years ago.

Status:
Closed
Priority:
High
Assignee:
-
Target version:
2015.0
Start date:
07/13/2013
Due date:
% Done:

0%

Estimated time:

Description

Batman 2013.2.0 sends incoming mesh packets to bat0 on Linux 2.6.32

Testsetup
Two indentical nodes, running Debian 6.0.7 (x86), eth1 of both nodes connected

node1 ~ # uname -a
Linux node1 2.6.32-5-686 #1 SMP Fri May 10 08:33:48 UTC 2013 i686 GNU/Linux
node1 ~ # dpkg -l | grep 2.6.32-5-686
ii  linux-headers-2.6.32-5-686          2.6.32-48squeeze3            Header files for Linux 2.6.32-5-686
ii  linux-image-2.6.32-5-686            2.6.32-48squeeze3            Linux 2.6.32 for modern PCs

node1 ~ # brctl show
bridge name     bridge id               STP enabled     interfaces
node1 ~ # ip link set eth1 up
node1 ~ # batctl if add eth1
node1 ~ # batctl if
eth1: active
node1 ~ # ip link set bat0 up
node1 ~ # ip add add 10.10.10.1/24 dev bat0
node1 ~ # ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 08:00:27:4b:75:b3 brd ff:ff:ff:ff:ff:ff
inet 10.1.1.215/24 brd 10.1.1.255 scope global eth0
inet6 fe80::a00:27ff:fe4b:75b3/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bat0 state UP qlen 1000
link/ether 08:00:27:00:00:01 brd ff:ff:ff:ff:ff:ff
inet6 fe80::a00:27ff:fe00:1/64 scope link
valid_lft forever preferred_lft forever
4: bat0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether 9a:fa:b3:73:f6:d8 brd ff:ff:ff:ff:ff:ff
inet 10.10.10.1/24 scope global bat0
inet6 fe80::98fa:b3ff:fe73:f6d8/64 scope link
valid_lft forever preferred_lft forever

node2 ~ # brctl show
bridge name     bridge id               STP enabled     interfaces
node2 ~ # ip link set eth1 up
node2 ~ # batctl if add eth1
node2 ~ # batctl if
eth1: active
node2 ~ # ip link set bat0 up
node2 ~ # ip add add 10.10.10.2/24 dev bat0
node2 ~ # ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 08:00:27:d9:50:55 brd ff:ff:ff:ff:ff:ff
    inet 10.1.1.216/24 brd 10.1.1.255 scope global eth0
    inet6 fe80::a00:27ff:fed9:5055/64 scope link
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bat0 state UP qlen 1000
    link/ether 08:00:27:00:00:02 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::a00:27ff:fe00:2/64 scope link
       valid_lft forever preferred_lft forever
4: bat0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
    link/ether b2:40:25:42:d3:05 brd ff:ff:ff:ff:ff:ff
    inet 10.10.10.2/24 scope global bat0
    inet6 fe80::b040:25ff:fe42:d305/64 scope link
       valid_lft forever preferred_lft forever

node1 ~ # batctl o
[B.A.T.M.A.N. adv 2013.2.0, MainIF/MAC: eth1/08:00:27:00:00:01 (bat0)]
  Originator      last-seen (#/255)           Nexthop [outgoingIF]:   Potential nexthops ...
08:00:27:00:00:02    0.780s   (255) 08:00:27:00:00:02 [      eth1]: 08:00:27:00:00:02 (255)

node2 ~ # batctl o
[B.A.T.M.A.N. adv 2013.2.0, MainIF/MAC: eth1/08:00:27:00:00:02 (bat0)]
  Originator      last-seen (#/255)           Nexthop [outgoingIF]:   Potential nexthops ...
08:00:27:00:00:01    0.420s   (255) 08:00:27:00:00:01 [      eth1]: 08:00:27:00:00:01 (255)

Let's send some traffic to the mesh:

node1 ~ # ping 10.10.10.2
PING 10.10.10.2 (10.10.10.2) 56(84) bytes of data.
64 bytes from 10.10.10.2: icmp_req=1 ttl=64 time=1.97 ms
64 bytes from 10.10.10.2: icmp_req=2 ttl=64 time=0.318 ms
64 bytes from 10.10.10.2: icmp_req=3 ttl=64 time=0.314 ms
[...]

On eth1 of node2 everything looks fine:

node2 ~ # batctl td eth1                                                                                                   
23:55:17.975137 BAT 08:00:27:00:00:01 > 08:00:27:00:00:02: UCAST, ttvn 1, ttl 50, IP 10.10.10.1 > 10.10.10.2: ICMP echo request, id 1588, seq 34, length 64
23:55:17.975261 BAT 08:00:27:00:00:02 > 08:00:27:00:00:01: UCAST, ttvn 1, ttl 50, IP 10.10.10.2 > 10.10.10.1: ICMP echo reply, id 1588, seq 34, length 64
23:55:18.024977 BAT 08:00:27:00:00:02: OGM IV via neigh 08:00:27:00:00:02, seq 288776459, tq 255, ttvn 1, ttcrc 13868, ttl 50, v 14, flags [...F.], length 26
23:55:18.128469 BAT 08:00:27:00:00:02: OGM IV via neigh 08:00:27:00:00:01, seq 288776459, tq 225, ttvn 1, ttcrc 13868, ttl 49, v 14, flags [.D...], length 46
23:55:18.461849 BAT 08:00:27:00:00:01: OGM IV via neigh 08:00:27:00:00:01, seq 2362693815, tq 255, ttvn 1, ttcrc 52668, ttl 50, v 14, flags [...F.], length 46
23:55:18.564340 BAT 08:00:27:00:00:01: OGM IV via neigh 08:00:27:00:00:02, seq 2362693815, tq 225, ttvn 1, ttcrc 52668, ttl 49, v 14, flags [.D...], length 26
23:55:18.981405 BAT 08:00:27:00:00:01 > 08:00:27:00:00:02: UCAST, ttvn 1, ttl 50, IP 10.10.10.1 > 10.10.10.2: ICMP echo request, id 1588, seq 35, length 64
23:55:18.981457 BAT 08:00:27:00:00:02 > 08:00:27:00:00:01: UCAST, ttvn 1, ttl 50, IP 10.10.10.2 > 10.10.10.1: ICMP echo reply, id 1588, seq 35, length 64
23:55:19.036161 BAT 08:00:27:00:00:02: OGM IV via neigh 08:00:27:00:00:02, seq 288776460, tq 255, ttvn 1, ttcrc 13868, ttl 50, v 14, flags [...F.], length 26
23:55:19.138587 BAT 08:00:27:00:00:02: OGM IV via neigh 08:00:27:00:00:01, seq 288776460, tq 225, ttvn 1, ttcrc 13868, ttl 49, v 14, flags [.D...], length 46
23:55:19.465249 BAT 08:00:27:00:00:01: OGM IV via neigh 08:00:27:00:00:01, seq 2362693816, tq 255, ttvn 1, ttcrc 52668, ttl 50, v 14, flags [...F.], length 46
23:55:19.564327 BAT 08:00:27:00:00:01: OGM IV via neigh 08:00:27:00:00:02, seq 2362693816, tq 225, ttvn 1, ttcrc 52668, ttl 49, v 14, flags [.D...], length 26
23:55:19.987974 BAT 08:00:27:00:00:01 > 08:00:27:00:00:02: UCAST, ttvn 1, ttl 50, IP 10.10.10.1 > 10.10.10.2: ICMP echo request, id 1588, seq 36, length 64
23:55:19.988016 BAT 08:00:27:00:00:02 > 08:00:27:00:00:01: UCAST, ttvn 1, ttl 50, IP 10.10.10.2 > 10.10.10.1: ICMP echo reply, id 1588, seq 36, length 64
23:55:20.024850 BAT 08:00:27:00:00:02: OGM IV via neigh 08:00:27:00:00:02, seq 288776461, tq 255, ttvn 1, ttcrc 13868, ttl 50, v 14, flags [...F.], length 26
23:55:20.128600 BAT 08:00:27:00:00:02: OGM IV via neigh 08:00:27:00:00:01, seq 288776461, tq 225, ttvn 1, ttcrc 13868, ttl 49, v 14, flags [.D...], length 46
^C

But there are many packets on bat0 which shouldn't be there:

node2 ~ # batctl td bat0                                                                                                   
23:55:35.531057 BAT 08:00:27:00:00:01: OGM IV via neigh 08:00:27:00:00:01, seq 2362693832, tq 255, ttvn 1, ttcrc 52668, ttl 50, v 14, flags [...F.], length 46
23:55:36.090997 BAT 08:00:27:00:00:01 > 08:00:27:00:00:02: UCAST, ttvn 1, ttl 50, IP 10.10.10.1 > 10.10.10.2: ICMP echo request, id 1588, seq 52, length 64
23:55:36.091051 IP 10.10.10.1 > 10.10.10.2: ICMP echo request, id 1588, seq 52, length 64
23:55:36.091062 IP 10.10.10.2 > 10.10.10.1: ICMP echo reply, id 1588, seq 52, length 64
23:55:36.192880 BAT 08:00:27:00:00:02: OGM IV via neigh 08:00:27:00:00:01, seq 288776477, tq 225, ttvn 1, ttcrc 13868, ttl 49, v 14, flags [.D...], length 46
23:55:36.529641 BAT 08:00:27:00:00:01: OGM IV via neigh 08:00:27:00:00:01, seq 2362693833, tq 255, ttvn 1, ttcrc 52668, ttl 50, v 14, flags [...F.], length 46
23:55:37.097030 BAT 08:00:27:00:00:01 > 08:00:27:00:00:02: UCAST, ttvn 1, ttl 50, IP 10.10.10.1 > 10.10.10.2: ICMP echo request, id 1588, seq 53, length 64
23:55:37.097071 IP 10.10.10.1 > 10.10.10.2: ICMP echo request, id 1588, seq 53, length 64
23:55:37.097081 IP 10.10.10.2 > 10.10.10.1: ICMP echo reply, id 1588, seq 53, length 64
23:55:37.158529 BAT 08:00:27:00:00:02: OGM IV via neigh 08:00:27:00:00:01, seq 288776478, tq 225, ttvn 1, ttcrc 13868, ttl 49, v 14, flags [.D...], length 46
23:55:37.536005 BAT 08:00:27:00:00:01: OGM IV via neigh 08:00:27:00:00:01, seq 2362693834, tq 255, ttvn 1, ttcrc 52668, ttl 50, v 14, flags [...F.], length 46
23:55:38.103986 BAT 08:00:27:00:00:01 > 08:00:27:00:00:02: UCAST, ttvn 1, ttl 50, IP 10.10.10.1 > 10.10.10.2: ICMP echo request, id 1588, seq 54, length 64
23:55:38.104027 IP 10.10.10.1 > 10.10.10.2: ICMP echo request, id 1588, seq 54, length 64
23:55:38.104037 IP 10.10.10.2 > 10.10.10.1: ICMP echo reply, id 1588, seq 54, length 64
23:55:38.177199 BAT 08:00:27:00:00:02: OGM IV via neigh 08:00:27:00:00:01, seq 288776479, tq 225, ttvn 1, ttcrc 13868, ttl 49, v 14, flags [.D...], length 46
23:55:38.554654 BAT 08:00:27:00:00:01: OGM IV via neigh 08:00:27:00:00:01, seq 2362693835, tq 255, ttvn 1, ttcrc 52668, ttl 50, v 14, flags [...F.], length 46
^C

Batman 2013.1.0 and Debian kernel 2.6.32-48squeeze3 doesn't show this problem.
Batman 2013.2.0 and Debian kernel 3.2.46-1~bpo60+1 also doesn't show this problem.

These are the attached files

node2 ~ # tcpdump -i eth1 -s 1500 -w node2-eth1.pcap
node2 ~ # tcpdump -i bat0 -s 1500 -w node2-bat0.pcap
node2 ~ # batctl ll all
node2 ~ # batctl l > batman-node2.log

Files

Download all files
batman-node2.log (12 KB) batman-node2.log Oliver Möschen, 07/13/2013 12:31 AM
node2-bat0.pcap (3.49 KB) node2-bat0.pcap Oliver Möschen, 07/13/2013 12:31 AM
node2-eth1.pcap (4.45 KB) node2-eth1.pcap Oliver Möschen, 07/13/2013 12:31 AM
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