Neutron only permits IPv6 MLDv1 not v2
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
OpenStack Security Advisory |
Won't Fix
|
Undecided
|
Unassigned | ||
neutron |
Expired
|
Wishlist
|
Unassigned |
Bug Description
IPv6 Multicast Listener Discovery (MLD) v2 [1] is used on recent version of Linux, currently Neutron only permits MLDv1 in the ICMPV6_
Here is a dump showing duplicate address detection on a recent Linux kernel:
$ uname -r
4.4.0-0.bpo.1-amd64
$ sudo ip link add veth0 type veth peer name veth1
$ sudo ip link set veth1 up
$ sudo tcpdump -npel -i veth1 &
[1] 15528
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on veth1, link-type EN10MB (Ethernet), capture size 262144 bytes
$ sudo ip link set veth0 up
$
09:47:38.853762 5e:9b:3c:4f:a3:e0 > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
09:47:38.853774 b2:29:3a:34:bc:eb > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
09:47:39.113772 b2:29:3a:34:bc:eb > 33:33:ff:34:bc:eb, ethertype IPv6 (0x86dd), length 78: :: > ff02::1:ff34:bceb: ICMP6, neighbor solicitation, who has fe80::b029:
09:47:39.141766 5e:9b:3c:4f:a3:e0 > 33:33:ff:4f:a3:e0, ethertype IPv6 (0x86dd), length 78: :: > ff02::1:ff4f:a3e0: ICMP6, neighbor solicitation, who has fe80::5c9b:
09:47:39.505764 b2:29:3a:34:bc:eb > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
09:47:39.717759 5e:9b:3c:4f:a3:e0 > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
09:47:40.113807 b2:29:3a:34:bc:eb > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: fe80::b029:
09:47:40.113827 b2:29:3a:34:bc:eb > 33:33:00:00:00:02, ethertype IPv6 (0x86dd), length 70: fe80::b029:
09:47:40.121756 b2:29:3a:34:bc:eb > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: fe80::b029:
09:47:40.141811 5e:9b:3c:4f:a3:e0 > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: fe80::5c9b:
09:47:40.141836 5e:9b:3c:4f:a3:e0 > 33:33:00:00:00:02, ethertype IPv6 (0x86dd), length 70: fe80::5c9b:
09:47:40.149763 5e:9b:3c:4f:a3:e0 > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: fe80::5c9b:
description: | updated |
Changed in neutron: | |
assignee: | nobody → Dustin Lundquist (dlundquist) |
status: | New → In Progress |
tags: | added: ipv6 |
Changed in neutron: | |
importance: | Undecided → Wishlist |
Fix proposed to branch: master /review. openstack. org/310909
Review: https:/