found this situation today, on a node that otherwise works normal ("alfred -r 64" normally returns around ~50 lines of output) https://pastebin.com/7xkXUnsr any idea what could lead to this state? (after a reboot, everything was fine again) (copypaste follows for reference) root@giordano:~# uptime 09:56:49 up 4 days, 21:49, load average: 0.40, 0.13, 0.08 root@giordano:~# alfred -r 64 # returns immediately, tcpdump on br-lan doesn't see any packet out root@giordano:~# alfred -r 64 root@giordano:~# ps |grep alfred 1182 root 1044 S /usr/sbin/alfred -i br-lan -b bat0 root@giordano:~# tcpdump -i br-lan udp port 16962 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on br-lan, link-type EN10MB (Ethernet), capture size 262144 bytes 09:46:40.945074 IP6 fe80::c24a:ff:fefc:38df.16962 > ip6-allnodes.16962: UDP, length 4 09:46:40.987477 IP6 fe80::c24a:ff:fefc:3a87.16962 > ip6-allnodes.16962: UDP, length 4 [...] i correctly see these two incoming announcements from the two masters in the network (giordano is slave) ### Tested changing mode to Master, no luck root@giordano:~# alfred -M master root@giordano:~# alfred -r 64 ### waited a minute or so, but never saw any outgoing announcement ### over br-lan (still seeing the other incoming announcements) root@giordano:~# /etc/init.d/alfred restart /etc/init.d/alfred: waiting 30 secs for br-lan address... /etc/init.d/alfred: starting alfred can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused can't connect to unix socket: Connection refused root@giordano:~# ps |grep alfred 30114 root 1184 S grep alfred root@giordano:~# netstat -tunpl Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:53 0.0.0.0:* LISTEN 1726/dnsmasq tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 847/dropbear tcp 0 0 127.0.0.1:5303 0.0.0.0:* LISTEN 973/orangerpcd tcp 0 0 :::12865 :::* LISTEN 858/netserver tcp 0 0 :::80 :::* LISTEN 856/lighttpd tcp 0 0 :::53 :::* LISTEN 1726/dnsmasq tcp 0 0 :::22 :::* LISTEN 847/dropbear udp 0 0 0.0.0.0:53 0.0.0.0:* 1726/dnsmasq udp 0 0 0.0.0.0:67 0.0.0.0:* 1726/dnsmasq udp 0 0 :::53 :::* 1726/dnsmasq udp 0 0 ff02::2:6240 :::* 874/bmx6 udp 0 0 fe80::c24a:ff:fefc:4154:6240 :::* 874/bmx6 udp 0 0 ff02::2:6240 :::* 874/bmx6 udp 0 0 fe80::c24a:ff:fefc:4155:6240 :::* 874/bmx6 udp 0 0 ff02::2:6240 :::* 874/bmx6 udp 0 0 fe80::c24a:ff:fefc:4153:6240 :::* 874/bmx6 root@giordano:~# alfred -i br-lan -b bat0 -d can't bind: Address not available Failed to open interfaces root@giordano:~# alfred -i br-lan -b bat0 -d can't bind: Address not available Failed to open interfaces root@giordano:~# alfred -i br-lan -b bat0 -d can't bind: Address not available Failed to open interfaces root@giordano:~# alfred -i br-lan -b bat0 -d can't bind: Address not available Failed to open interfaces root@giordano:~# alfred -i br-lan -b bat0 -d can't bind: Address not available Failed to open interfaces root@giordano:~# ip a s br-lan 11: br-lan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether c2:4a:00:fc:41:54 brd ff:ff:ff:ff:ff:ff inet 10.5.0.31/21 brd 10.5.7.255 scope global br-lan valid_lft forever preferred_lft forever inet6 2801:1e8:2::5341:fc00/64 scope global valid_lft forever preferred_lft forever inet6 fe80::d4f4:2aff:feb8:ce2d/64 scope link valid_lft forever preferred_lft forever root@giordano:~# uptime 10:29:41 up 4 days, 22:22, load average: 0.08, 0.14, 0.10