Dear maintainer,

With the most recent upgrade of minissdpd, the 'Address already in use'
messages from #903783 seem to have returned. They now appear every five
minutes or so:

    Feb  9 17:02:58 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:02:58 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:02:58 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:03:01 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:03:01 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:03:01 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:03:09 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:03:09 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:03:09 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:11:18 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:11:18 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use
    Feb  9 17:11:18 bean minissdpd[2321]: setsockopt(udp, IPV6_JOIN_GROUP)(FF02::C, wlan0): Address already in use

I do not recall consciously having set the MiniSSDPd_INTERFACE_ADDRESS
option, which was modified on 2019-02-08, it seems when the latest
release was installed. Maybe this has something to do with it?

Regards,
Matijs

Dear maintainer,

After sending this report, I started editing my logcheck configuration
to ignore these messages for the time being, and I discovered that a
similar message was already filtered out, but with a blank interface
name. I'm guessing I added this filter while #903783 was open.

Indeed, looking at older logs, I can see that these messages were
present at least as long ago as January:

    Jan 09 14:42:54 bean minissdpd[9821]: setsockopt(udp,
IPV6_JOIN_GROUP)(FF02::C, ): Address already in use

I'm not sure #903783 was actually fixed, at least for my system.

Kind regards,
Matijs van Zuijlen

No idea. Could you please attach an example of log, 'ip a' 'ip r'
'sudo netstat -anup' output, and its corresponding wireshark capture?

can't reproduce by any possible means I can image

Dear maintainer,

These messages no longer occur so as far as I'm concerned this issue can
be closed. I guess it was fixed in
https://github.com/miniupnp/miniupnp/pull/473.