Matthijs van Duin

@adriancable Depends on whether the RA is actually handled by the kernel or by a network manager in userspace, e.g. systemd-networkd disables the kernel's RA handling (`/proc/sys/net/ipv6/conf/$INTERFACE/accept_ra` is set to...

Yep. It also means that people with the same problem could try using systemd-networkd as network manager as a workaround, if it suits their use-case (e.g. embedded or server more...

It seems to be caused by the "preferred lifetime" of the prefix expiring, i.e. the router is sending router advertisements with a preferred lifetime which is shorter than the interval...

(i.e. the only role avahi has in this issue is that it's making the issue more visible by logging about it.) You should be able to confirm this with `ip...

Also, getting the address periodically withdrawn because it keeps expiring in between router advertisements (which is a router bug, not an avahi bug) is not actually related to this bug...

> if Avahi has the socket bound for mDNS and you cannot listen too, then you can't receive replies @Piero512 This is incorrect. Multiple udp sockets can bind to the...

(Also, do not send unicast queries to port 5353. While the RFC says that "in specialized applications there may be rare situations where it makes sense" to do so, without...

It may open one or more udp sockets on a random (kernel-chosen) port for performing unicast DNS queries if you have the reflector and/or wide-area enabled in your avahi-daemon.conf

> Why a random port? Someway to set a persistent port? E.g. if u use upnp with firewall. This is for outgoing queries, the only packets you ever receive on...

Avahi does nothing out of the ordinary, it simply uses libdbus (the reference dbus implementation) to connect to the system bus in the default, recommended way. If you have a...