** Information type changed from Private Security to Public -- 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/1865474
Title: sysytemd-resolved automatically use an ipv6 dns server on lan Status in systemd package in Ubuntu: New Bug description: lsb_release -rd Description: Ubuntu Focal Fossa (development branch) Release: 20.04 i installed focal from the netboot version mini.iso. i encountered some problem on dsn configuration and i found that systemd-resolved was using an ipv6 dns address this is my netplan configuration: network: version: 2 renderer: networkd ethernets: ens3: addresses: - 192.168.1.1/24 gateway4: 192.168.1.212 nameservers: search: [xxx.com] addresses: [192.168.1.191, 192.168.1.206] this is the output of "systemd-resolved --status" Global LLMNR setting: no MulticastDNS setting: no DNSOverTLS setting: no DNSSEC setting: no DNSSEC supported: no DNSSEC NTA: 10.in-addr.arpa 16.172.in-addr.arpa 168.192.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 corp d.f.ip6.arpa home internal intranet lan local private test Link 2 (ens3) Current Scopes: DNS DefaultRoute setting: yes LLMNR setting: yes MulticastDNS setting: no DNSOverTLS setting: no DNSSEC setting: no DNSSEC supported: no Current DNS Server: fe80::6670:2ff:feb5:d9c8 DNS Servers: 192.168.1.191 192.168.1.206 fe80::6670:2ff:feb5:d9c8 DNS Domain: xxx.com -- as you can see systemd is using the ipv6 dns server. i found that such ip was the address of my openwrt wifi router. dnsmasq is disabled for ipv4 lan interface on the router and i never configured an ipv6 network. Anyway i disabled all the ipv6 dnsmasq feature on the router and after a restart this fixed the problem. But i think that this is a bug. In my netplan i never configured an ipv6 dns nor a ipv6 network; furthermore none of my other ubuntu bionic servers showed such a behaviour. Also another focal netboot installation i made three weeks ago didn't show this problem. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1865474/+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
