It occurred to me, that the actual query might be cached at that time, so I did a fresh restart of systemd-resolved and query, and then follows the log for these times: I don't see much relevant details in it, except that it also tries to find MX-records but fails till <attempts-max-reached>.
avl@fpc:~$ date; sudo systemctl restart systemd-resolved Fr Dez 6 09:27:34 CET 2019 avl@fpc:~$ date; host fpc Fr Dez 6 09:27:39 CET 2019 fpc has address 10.2.2.1 fpc has address 10.2.2.250 fpc has IPv6 address fe80::4687:fcff:fe9e:4ac7 avl@fpc:~$ Note: the 10.2.2.250 is a remainder from a recent experiment, adding a second IP address to the same network device. It is not in 10.2.2.3's /etc/hosts . The problem of bad inet6 returned predates my addition of the second ip-address. Here the log: Dez 06 09:27:34 fpc systemd[1]: Stopping Network Name Resolution... Dez 06 09:27:34 fpc systemd-resolved[4579]: Removing scope on link *, protocol dns, family * Dez 06 09:27:34 fpc systemd[1]: Stopped Network Name Resolution. Dez 06 09:27:34 fpc systemd[1]: Starting Network Name Resolution... Dez 06 09:27:35 fpc systemd-resolved[4616]: Positive Trust Anchors: Dez 06 09:27:35 fpc systemd-resolved[4616]: . IN DS 19036 8 2 49aac11d7b6f6446702e54a1607371607a1a41855200fd2ce1cdde32f24e8fb5 Dez 06 09:27:35 fpc systemd-resolved[4616]: . IN DS 20326 8 2 e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d Dez 06 09:27:35 fpc systemd-resolved[4616]: Negative trust anchors: 10.in-addr.arpa 16.172.in-addr.arpa 17.172.in-addr.arpa 18.172.in-addr.arpa 19.172.in-addr.arpa 20.172.in-addr.arpa 21.172.in-addr.arpa 22.172.in-addr.arpa 23.172.in-addr.arpa 24.172.in-addr.arpa 25.172.in-addr.arpa 26.172.in-addr.arpa 27.172.in-addr.arpa 28.172.in-addr.arpa 29.172.in-addr.arpa 30.172.in-addr.arpa 31.172.in-addr.arpa 168.192.in-addr.arpa d.f.ip6.arpa corp home internal intranet lan local private test Dez 06 09:27:35 fpc systemd-resolved[4616]: Using system hostname 'fpc'. Dez 06 09:27:35 fpc systemd-resolved[4616]: New scope on link *, protocol dns, family * Dez 06 09:27:35 fpc systemd-resolved[4616]: Found new link 2/enp4s0 Dez 06 09:27:35 fpc systemd-resolved[4616]: Found new link 1/lo Dez 06 09:27:35 fpc systemd-resolved[4616]: Bus n/a: changing state UNSET → OPENING Dez 06 09:27:35 fpc systemd-resolved[4616]: Bus n/a: changing state OPENING → AUTHENTICATING Dez 06 09:27:35 fpc systemd-resolved[4616]: Creating stub listener using UDP/TCP. Dez 06 09:27:35 fpc systemd-resolved[4616]: Switching to system DNS server 10.2.2.3. Dez 06 09:27:35 fpc systemd-resolved[4616]: Bus n/a: changing state AUTHENTICATING → HELLO Dez 06 09:27:35 fpc systemd-resolved[4616]: Sent message type=method_call sender=n/a destination=org.freedesktop.DBus path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=Hello cookie=1 reply_cookie=0 signature=n/a error-name=n/a error-message=n/a Dez 06 09:27:35 fpc systemd-resolved[4616]: Sent message type=method_call sender=n/a destination=org.freedesktop.DBus path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=RequestName cookie=2 reply_cookie=0 signature=su error-name=n/a error-message=n/a Dez 06 09:27:35 fpc systemd-resolved[4616]: Sent message type=method_call sender=n/a destination=org.freedesktop.DBus path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=AddMatch cookie=3 reply_cookie=0 signature=s error-name=n/a error-message=n/a Dez 06 09:27:35 fpc systemd-resolved[4616]: Got message type=method_return sender=org.freedesktop.DBus destination=:1.2788 path=n/a interface=n/a member=n/a cookie=1 reply_cookie=1 signature=s error-name=n/a error-message=n/a Dez 06 09:27:35 fpc systemd-resolved[4616]: Bus n/a: changing state HELLO → RUNNING Dez 06 09:27:35 fpc systemd-resolved[4616]: Got message type=signal sender=org.freedesktop.DBus.Local destination=n/a path=/org/freedesktop/DBus/Local interface=org.freedesktop.DBus.Local member=Connected cookie=4294967295 reply_cookie=0 signature=n/a error-name=n/a error-message=n/a Dez 06 09:27:35 fpc systemd-resolved[4616]: Got message type=signal sender=org.freedesktop.DBus destination=:1.2788 path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=NameAcquired cookie=2 reply_cookie=0 signature=s error-name=n/a error-message=n/a Dez 06 09:27:35 fpc systemd[1]: Started Network Name Resolution. Dez 06 09:27:35 fpc systemd-resolved[4616]: Got message type=signal sender=org.freedesktop.DBus destination=:1.2788 path=/org/freedesktop/DBus interface=org.freedesktop.DBus member=NameAcquired cookie=3 reply_cookie=0 signature=s error-name=n/a error-message=n/a Dez 06 09:27:35 fpc systemd-resolved[4616]: Got message type=method_return sender=org.freedesktop.DBus destination=:1.2788 path=n/a interface=n/a member=n/a cookie=4 reply_cookie=2 signature=u error-name=n/a error-message=n/a Dez 06 09:27:35 fpc systemd-resolved[4616]: Successfully acquired requested service name. Dez 06 09:27:35 fpc systemd-resolved[4616]: Got message type=method_return sender=org.freedesktop.DBus destination=:1.2788 path=n/a interface=n/a member=n/a cookie=5 reply_cookie=3 signature=n/a error-name=n/a error-message=n/a Dez 06 09:27:35 fpc systemd-resolved[4616]: Match type='signal',sender='org.freedesktop.login1',path='/org/freedesktop/login1',interface='org.freedesktop.login1.Manager',member='PrepareForSleep' successfully installed. Dez 06 09:27:39 fpc systemd-resolved[4616]: Got DNS stub UDP query packet for id 47976 Dez 06 09:27:39 fpc systemd-resolved[4616]: Looking up RR for fpc IN A. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending response packet with id 47976 on interface 1/AF_INET. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing query... Dez 06 09:27:39 fpc systemd-resolved[4616]: Got DNS stub UDP query packet for id 63701 Dez 06 09:27:39 fpc systemd-resolved[4616]: Looking up RR for fpc IN AAAA. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending response packet with id 63701 on interface 1/AF_INET. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing query... Dez 06 09:27:39 fpc systemd-resolved[4616]: Got DNS stub UDP query packet for id 27785 Dez 06 09:27:39 fpc systemd-resolved[4616]: Looking up RR for fpc IN MX. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 33894 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 33894. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using DNS server 10.2.2.3 for transaction 33894. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 33894. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing query... Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 33894. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Verified we get a response at feature level UDP from DNS server 10.2.2.3. Dez 06 09:27:39 fpc systemd-resolved[4616]: Server doesn't support EDNS(0) properly, downgrading feature level... Dez 06 09:27:39 fpc systemd-resolved[4616]: Using degraded feature set (UDP) for DNS server 10.2.2.3. Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 33894 is now 29224. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 29224 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 29224. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 29224. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 29224. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 29224 is now 62485. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 62485 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 62485. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 62485. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 62485. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 62485 is now 4602. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 4602 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 4602. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 4602. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 4602. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 4602 is now 31387. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 31387 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 31387. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 31387. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 31387. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 31387 is now 12697. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 12697 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 12697. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 12697. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 12697. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 12697 is now 31670. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 31670 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 31670. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 31670. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 31670. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 31670 is now 46953. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 46953 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 46953. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 46953. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 46953. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 46953 is now 20989. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 20989 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 20989. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 20989. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 20989. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 20989 is now 7968. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 7968 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 7968. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 7968. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 7968. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 7968 is now 13160. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 13160 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 13160. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 13160. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 13160. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 13160 is now 19126. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 19126 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 19126. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 19126. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 19126. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 19126 is now 46864. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 46864 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 46864. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 46864. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 46864. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 46864 is now 56446. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 56446 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 56446. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 56446. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 56446. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 56446 is now 28338. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 28338 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 28338. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 28338. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 28338. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 28338 is now 9719. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 9719 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 9719. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 9719. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 9719. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 9719 is now 48267. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 48267 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 48267. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 48267. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 48267. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 48267 is now 50902. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 50902 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 50902. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 50902. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 50902. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 50902 is now 50290. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 50290 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 50290. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 50290. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 50290. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 50290 is now 374. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 374 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 374. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 374. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 374. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 374 is now 33389. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 33389 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 33389. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 33389. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 33389. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 33389 is now 60705. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 60705 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 60705. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 60705. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 60705. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 60705 is now 56697. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 56697 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 56697. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 56697. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 56697. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 56697 is now 2956. Dez 06 09:27:39 fpc systemd-resolved[4616]: Cache miss for fpc IN MX Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 2956 for <fpc IN MX> scope dns on */*. Dez 06 09:27:39 fpc systemd-resolved[4616]: Using feature level UDP+EDNS0 for transaction 2956. Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending query packet with id 2956. Dez 06 09:27:39 fpc systemd-resolved[4616]: Processing incoming packet on transaction 2956. (rcode=SUCCESS) Dez 06 09:27:39 fpc systemd-resolved[4616]: Server feature level is now lower than when we began our transaction. Restarting with new ID. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 2956 is now 41689. Dez 06 09:27:39 fpc systemd-resolved[4616]: Transaction 41689 for <fpc IN MX> on scope dns on */* now complete with <attempts-max-reached> from network (unsigned). Dez 06 09:27:39 fpc systemd-resolved[4616]: Sending response packet with id 27785 on interface 1/AF_INET. Dez 06 09:27:39 fpc systemd-resolved[4616]: Freeing transaction 41689. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1853669 Title: systemd resolves own hostname to link local ipv6 address Status in systemd package in Ubuntu: Incomplete Bug description: I've got an ethernet-device that only has a configured ipv4 address, and some auto-generated link-local (aka "scope link") ipv6 address. Any tool doing a DNS query (and /lib/systemd/systemd-resolved is the DNS-server listening on 127.0.0.53) for this host's hostname gets back two addresses: the correct ipv4 address, and a broken ipv6 address. Unlike on ipv4, it is possible for the same ipv6-address to be assigned to multiple devices, and therefore the address is only valid in the context of the eth-device. Now, if "ifconfig" shows "inet6 fe80::4687:fcff:fe9e:4ac7 prefixlen 64 scopeid 0x20<link>" then "fe80::4687:fcff:fe9e:4ac7" is NOT a connectable address, and syscall connect() typically fails with EINVAL. To make it a valid address, it needs to be suffixed with a "%" and the device name, like: fe80::4687:fcff:fe9e:4ac7%enp4s0 Either the resolver can return the link name attached to the address separated with a "%" char, or it needs to ignore link-local inet6 addresses. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1853669/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
