Hi,
since this morning there is no internet connection any more through the TO. I changed nothing since yesterday. In the system log as shown below, TO does not get a V4 IP address (I do not use V6) and it can not connect to api.turris.cz. I disabled DNSSEC and/or forwarding, changed to the ISP DNS Server, restarted TO and PC but nothing helped. The Windows problem solver of the attached PC says “the DNS Server is not responding”. Access of the Internet via another router without TO does work, so ISP connection is OK.
In foris: the test of IPv4 and gateway connectivity is OK, DNS/DNSSEC resolving is not OK
In luci: ping request: negative, “bad address”, DNS test: “timeout, no servers could be reached”.
OS 3.11.3
Thank you for any suggestion what might be wrong.
This is the server log, content is alwas repeating due to the errors:
> 2019-04-03 13:00:39 info ucollect[28493]: Socat started
> 2019-04-03 13:00:44 err ucollect[28493]: Failed to resolve uplink api.turris.cz:5679: Try again
> 2019-04-03 13:00:44 warning ucollect[28493]: Didn't get any V4 address in resolution of api.turris.cz
> 2019-04-03 13:00:44 warning ucollect[28493]: Didn't get any V6 address in resolution of api.turris.cz> 2019-04-03 13:00:44 err ucollect[28493]: Error from socat: 2019/04/03 13:00:44 socat[28616] E getaddrinfo("api.turris.cz", "NULL", {1,2,1,6}, {}): Try again
>
> 2019-04-03 13:00:44 warning ucollect[28493]: Remote closed the uplink api.turris.cz:5679, reconnecting
>
> 2019-04-03 13:00:44 warning ucollect[28493]: epoll_wait on 4 interrupted, retry
>
> 2019-04-03 13:00:44 info ucollect[28493]: Reconnecting to api.turris.cz:5679 now
>
> 2019-04-03 13:00:44 crit ucollect[28493]: Too many login failures, giving up
>
> 2019-04-03 13:01:01 info /usr/sbin/cron[28630]: (root) CMD (/usr/bin/rainbow_button_sync.sh)
>
> 2019-04-03 13:01:44 info ucollect[28647]: Initializing emergency signal handlers
>
> 2019-04-03 13:01:44 info ucollect[28647]: Creating a main loop
>
> 2019-04-03 13:01:44 info ucollect[28647]: Creating uplink
>
> 2019-04-03 13:01:44 info ucollect[28647]: Initializing PCAP (in) on lo
>
> 2019-04-03 13:01:44 info ucollect[28647]: Initializing PCAP (out) on lo
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libplugin_ucollect_badconf_25.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Installing plugin Badconf with api version 0
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libplugin_ucollect_bandwidth_22.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Installing plugin Bandwidth with api version 0
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libplugin_ucollect_count_28.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Installing plugin Count with api version 0
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libplugin_ucollect_fake_23.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Installing plugin Fake with api version 0
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libplugin_ucollect_flow_33.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Installing plugin Flow with api version 2
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libpluglib_ucollect_diffstore_1.2.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libplugin_ucollect_fwup_12.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Installing plugin Fwup with api version 2
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libpluglib_ucollect_diffstore_1.2.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libplugin_ucollect_refused_13.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Installing plugin Refused with api version 0
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libplugin_ucollect_sniff_19.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Installing plugin Sniff with api version 0
>
> 2019-04-03 13:01:45 info ucollect[28647]: Loading plugin library libplugin_ucollect_spoof_8.so
>
> 2019-04-03 13:01:45 info ucollect[28647]: Installing plugin Spoof with api version 0
>
> 2019-04-03 13:01:45 info ucollect[28647]: Changing remote uplink address to api.turris.cz:5679
>
> 2019-04-03 13:01:50 err ucollect[28647]: Failed to resolve uplink api.turris.cz:5679: Try again
>
> 2019-04-03 13:01:50 warning ucollect[28647]: Didn't get any V4 address in resolution of api.turris.cz
>
> 2019-04-03 13:01:50 warning ucollect[28647]: Didn't get any V6 address in resolution of api.turris.cz
>
> 2019-04-03 13:01:50 info ucollect[28647]: Sending login credentials disabled
>
> 2019-04-03 13:01:50 info ucollect[4360]: Last message 'Sending login creden' repeated 5 times, suppressed by syslog-ng on turris
>
> 2019-04-03 13:01:50 info ucollect[28647]: Unloading plugin library
>
> 2019-04-03 13:01:50 info ucollect[28647]: Running the main loop
>
> 2019-04-03 13:01:50 info ucollect[28647]: Reconnecting to api.turris.cz:5679 now
>
> 2019-04-03 13:01:50 info ucollect[28647]: Socat started
>
> 2019-04-03 13:01:55 err ucollect[28647]: Failed to resolve uplink api.turris.cz:5679: Try again
>
> 2019-04-03 13:01:55 warning ucollect[28647]: Didn't get any V4 address in resolution of api.turris.cz
>
> 2019-04-03 13:01:55 warning ucollect[28647]: Didn't get any V6 address in resolution of api.turris.cz
>
> 2019-04-03 13:01:55 err ucollect[28647]: Error from socat: 2019/04/03 13:01:55 socat[28656] E getaddrinfo("api.turris.cz", "NULL", {1,10,1,6}, {}): Try again
>
> 2019-04-03 13:01:55 warning ucollect[28647]: Remote closed the uplink api.turris.cz:5679, reconnecting
>
> 2019-04-03 13:01:55 warning ucollect[28647]: epoll_wait on 4 interrupted, retry
>
> 2019-04-03 13:01:55 info ucollect[28647]: Reconnecting to api.turris.cz:5679 now
>
> 2019-04-03 13:01:55 info ucollect[28647]: Socat startedThese errors were shown before, including a checksum error of the internal MMC memory:
> 2019-04-03 12:32:44 err kresd[25525]: SIGBUS received; this is most likely due to filling up the filesystem where cache resides.
>
> 2019-04-03 12:32:44 warning kernel[]: [ 1715.417882] BTRFS warning (device mmcblk0p1): csum failed ino 9886 off 393216 csum 1000242804 expected csum 2049996767
>
> 2019-04-03 12:32:48 err ucollect[24109]: Failed to resolve uplink api.turris.cz:5679: Try again
>
> 2019-04-03 12:32:48 warning ucollect[24109]: Didn't get any V4 address in resolution of api.turris.cz
>
> 2019-04-03 12:32:48 warning ucollect[24109]: Didn't get any V6 address in resolution of api.turris.cz
>
> 2019-04-03 12:32:48 err ucollect[24109]: Error from socat: 2019/04/03 12:32:48 socat[25422] E getaddrinfo("api.turris.cz", "NULL", {1,2,1,6}, {}): Try again
>
> 2019-04-03 12:32:48 warning ucollect[24109]: Remote closed the uplink api.turris.cz:5679, reconnecting
>
> 2019-04-03 12:32:48 warning ucollect[24109]: epoll_wait on 4 interrupted, retry
>
> 2019-04-03 12:32:48 info ucollect[24109]: Reconnecting to api.turris.cz:5679 now
>
> 2019-04-03 12:32:48 crit ucollect[24109]: Too many login failures, giving up
>
> 2019-04-03 12:32:49 err kresd[25721]:
>
> 2019-04-03 12:32:49 err kresd[25721]: SIGBUS received; this is most likely due to filling up the filesystem where cache resides.
>
> 2019-04-03 12:32:49 warning kernel[]: [ 1720.462011] BTRFS warning (device mmcblk0p1): csum failed ino 9886 off 393216 csum 1000242804 expected csum 2049996767
>
> 2019-04-03 12:32:54 err kresd[25757]:
>
> 2019-04-03 12:32:54 err kresd[25757]: SIGBUS received; this is most likely due to filling up the filesystem where cache resides.