1. Machine with 2001:1b70:82a8:18:650:65:0:2 address, and receive wrong
icmp packets
root@du1:~# ifconfig
eth10.650 Link encap:Ethernet HWaddr 74:c9:9a:a7:e5:88
inet6 addr: fe80::76c9:9aff:fea7:e588/64 Scope:Link
inet6 addr: 2001:1b70:82a8:18:650:65:0:2/80 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1 errors:0 dropped:0 overruns:0 frame:0
TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:104 (104.0 B) TX bytes:934 (934.0 B)
2. ICMPv6 packet is as below.
###[ Ethernet ]###
dst = 74:C9:9A:A7:E5:88
src = ae:4f:44:f2:10:cc
type = 0x86dd
###[ IPv6 ]###
version = 6
tc = 0
fl = 0
plen = None
nh = ICMPv6
hlim = 64
src = 2001:1b70:82a8:18:650:65:0:4
dst = 2001:1b70:82a8:18:650:65:0:2
###[ ICMPv6 Packet Too Big ]###
type = Packet too big
code = 0
cksum = None
mtu = 1280
###[ IPv6 ]###
version = 6
tc = 0
fl = 0
plen = None
nh = ICMPv6
hlim = 255
src = 2001:1b70:82a8:18:650:65:0:2
dst = 2001:1b70:82a8:18:650:65:0:2
###[ ICMPv6 Neighbor Discovery - Neighbor Advertisement ]###
type = Neighbor Advertisement
code = 0
cksum = None
R = 1
S = 0
O = 1
res = 0x0
tgt = 2001:1b70:82a8:18:650:65:0:2
##### Test #####
3. Send ICMPv6 with Scapy to trigger fault.
conf.iface='eth1'
eth = Ether(src='ae:4f:44:f2:10:cc', dst='74:C9:9A:A7:E5:88')
base = IPv6(src='2001:1b70:82a8:18:650:65:0:4',
dst='2001:1b70:82a8:18:650:65:0:2')
ptb = ICMPv6PacketTooBig(type=2)
packet = eth/base/ptb
ptb_payload_na_base = IPv6(src='2001:1b70:82a8:18:650:65:0:2',
dst='2001:1b70:82a8:18:650:65:0:2')
ptb_payload_na = ICMPv6ND_NA(type=136, tgt='2001:1b70:82a8:18:650:65:0:2')
ptb_payload = ptb_payload_na_base/ptb_payload_na
packet = packet/ptb_payload
sendp(packet, iface="eth1.650", count=1)
4. route information will enter the faulty state after Wait 600 seconds,
root@du1:~# ip route get 2001:1b70:82a8:18:650:65:0:2
local 2001:1b70:82a8:18:650:65:0:2 dev lo proto none src
2001:1b70:82a8:18:650:65:0:2 metric 0 expires 7sec mtu 1280
root@du1:~# ip route get 2001:1b70:82a8:18:650:65:0:2
local 2001:1b70:82a8:18:650:65:0:2 dev lo proto none src
2001:1b70:82a8:18:650:65:0:2 metric 0 expires 3sec mtu 1280
root@du1:~# ip route get 2001:1b70:82a8:18:650:65:0:2
2001:1b70:82a8:18:650:65:0:2 dev eth10.650 src
2001:1b70:82a8:18:650:65:0:2 metric 0
cache
root@du1:~#
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
