Re: packets trickling out of STP-blocked ports

From
Andrew Lunn <andrew@lunn.ch>
Date
2021-12-31 15:31:43
Reply to
Alexandre Belloni, 2021-12-31
quoted
quoted
sysctl -w net.ipv6.conf.swp3.autoconf=0
That sounds very promising! Sorry you had to fix my system config, but
glad that this all makes perfect sense. 
Hi Alexandre
Let me know if this works ;) The bottom line being that you should
probably disable ipv6 autoconf on individual interfaces and then enable
it on the bridge.
Does this also stop the interface getting a link local IPv6 address
based on its MAC address?

e.g. my wifi interface has MAC address b8:ae:ed:78:ef:9d and gets an
IPv6 address

inet6 fe80::baae:edff:fe78:ef9d/64 scope link 

It will also perform duplicate address detection, DAD, when the
interface is brought up. That is probably hard to see with tcpdump on
the host, since it happens very quickly, but a link peer should see
the packets.

    Andrew
Thread (8 messages) 8 messages, 4 authors, 2022-01-01
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