[Touch-packages] [Bug 1910273] Re: Upgrade to groovy breaks DNS resolution
*** This bug is a duplicate of bug 1907878 *** https://bugs.launchpad.net/bugs/1907878 I've run into the same problem on a server upgraded from 18.04 to 20.04 and 22.04. After the last upgrade step, DNS did not work anymore. It seems that DNS information does not get properly propagated from ifupdown configuration (/etc/network/interfaces) to systemd-resolved. The main issue seems to be this error: ``` /etc/network/if-up.d/resolved: 70: DNS: not found ``` It seems that the state files e.g. /run/network/ifupdown-inet-eth0 contain the following string: ``` "DNS"="" When the script tries to source the file around line 78, this fails. I fixed it by removing the quotes around $DNS and $DOMAINS on line 47 and 51. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ifupdown in Ubuntu. https://bugs.launchpad.net/bugs/1910273 Title: Upgrade to groovy breaks DNS resolution Status in ifupdown package in Ubuntu: Confirmed Bug description: ~# lsb_release -rd Description: Ubuntu 20.10 Release: 20.10 ~# apt-cache policy ifupdown ifupdown: Instalēts: 0.8.35ubuntu2 Kandidāts: 0.8.35ubuntu2 Versiju tabula: *** 0.8.35ubuntu2 500 500 http://mirrors.digitalocean.com/ubuntu groovy/universe amd64 Packages 100 /var/lib/dpkg/status ~# Problem: Upon upgrade from Ubuntu 20.04 to Ubuntu 20.10, I expected name resolution upon reboot to work as usual. What happened: a) /var/log/syslog sprinkled with error messages: - /etc/network/if-up.d/resolved: 12: mystatedir: not found - /etc/network/if-up.d/resolved: 70: DNS: not found - /etc/network/if-up.d/resolved: 1: /run/network/ifupdown-inet-eth0: DNS=8.8.8.8 8.8.4.4: not found b) resolvectl dns returning no name servers Investigation: Recently changed /etc/network/if-up.d/resolved and /etc/network/if-down.d/resolved files contain programming errors. See https://git.launchpad.net/ubuntu/+source/ifupdown/commit/?id=54fec5eedfd59adaffe9021c271914578dd05d1b . Fix: $ diff /Users/pklavins/Downloads/ifupdown-0.8.35ubuntu2/debian/if-down.d/resolved if-down.d_resolved 12c12 < mystatedir statedir ifindex interface --- > # local mystatedir statedir ifindex interface $ diff /Users/pklavins/Downloads/ifupdown-0.8.35ubuntu2/debian/if-up.d/resolved if-up.d_resolved 12c12 < mystatedir statedir ifindex interface --- > # local mystatedir statedir ifindex interface 39,40c39,40 < DNS=DNS < DOMAINS=DOMAINS --- > DNS=$DNS > DOMAINS=$DOMAINS 42,43c42,43 < DNS=DNS6 < DOMAINS=DOMAINS6 --- > DNS=$DNS6 > DOMAINS=$DOMAINS6 47c47 < "$DNS"="$NEW_DNS" --- > DNS="$NEW_DNS" 51c51 < "$DOMAINS"="$NEW_DOMAINS" --- > DOMAINS="$NEW_DOMAINS" 70c70 < DNS DNS6 DOMAINS DOMAINS6 DEFAULT_ROUTE --- > # local DNS DNS6 DOMAINS DOMAINS6 DEFAULT_ROUTE $ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1910273/+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
[Touch-packages] [Bug 1910273] Re: Upgrade to groovy breaks DNS resolution
*** This bug is a duplicate of bug 1907878 *** https://bugs.launchpad.net/bugs/1907878 I am getting DOMAINS in /etc/resolve.conf: DOMAINS is initialized with "DOMAINS" in `/etc/network/if-up.d/resolved` and set in /run/systemd/resolve/netif/* ```bash $ cat /run/systemd/resolve/netif/3 # This is private data. Do not parse. LLMNR=yes MDNS=no SERVERS=DNS DOMAINS=DOMAINS ``` systemd-resolved adds DOMAINS to domains-searchlist: ```bash cat /etc/resolv.conf # This is /run/systemd/resolve/resolv.conf managed by man:systemd-resolved(8). # Do not edit. # # This file might be symlinked as /etc/resolv.conf. If you're looking at # /etc/resolv.conf and seeing this text, you have followed the symlink. # # This is a dynamic resolv.conf file for connecting local clients directly to # all known uplink DNS servers. This file lists all configured search domains. # # Third party programs should typically not access this file directly, but only # through the symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a # different way, replace this symlink by a static file or a different symlink. # # See man:systemd-resolved.service(8) for details about the supported modes of # operation for /etc/resolv.conf. nameserver 127.0.0.1 nameserver 192.168.2.1 search DOMAINS lan ``` DOMAINS=$DOMAINS would have no effect and could be omitted, As there are further errors form the if-down script (resolved: 12: mystatedir: not found), i've removed both `/etc/network/if-up.d/resolved` and `/etc/network/if- down.d/resolved`. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ifupdown in Ubuntu. https://bugs.launchpad.net/bugs/1910273 Title: Upgrade to groovy breaks DNS resolution Status in ifupdown package in Ubuntu: Confirmed Bug description: ~# lsb_release -rd Description: Ubuntu 20.10 Release: 20.10 ~# apt-cache policy ifupdown ifupdown: Instalēts: 0.8.35ubuntu2 Kandidāts: 0.8.35ubuntu2 Versiju tabula: *** 0.8.35ubuntu2 500 500 http://mirrors.digitalocean.com/ubuntu groovy/universe amd64 Packages 100 /var/lib/dpkg/status ~# Problem: Upon upgrade from Ubuntu 20.04 to Ubuntu 20.10, I expected name resolution upon reboot to work as usual. What happened: a) /var/log/syslog sprinkled with error messages: - /etc/network/if-up.d/resolved: 12: mystatedir: not found - /etc/network/if-up.d/resolved: 70: DNS: not found - /etc/network/if-up.d/resolved: 1: /run/network/ifupdown-inet-eth0: DNS=8.8.8.8 8.8.4.4: not found b) resolvectl dns returning no name servers Investigation: Recently changed /etc/network/if-up.d/resolved and /etc/network/if-down.d/resolved files contain programming errors. See https://git.launchpad.net/ubuntu/+source/ifupdown/commit/?id=54fec5eedfd59adaffe9021c271914578dd05d1b . Fix: $ diff /Users/pklavins/Downloads/ifupdown-0.8.35ubuntu2/debian/if-down.d/resolved if-down.d_resolved 12c12 < mystatedir statedir ifindex interface --- > # local mystatedir statedir ifindex interface $ diff /Users/pklavins/Downloads/ifupdown-0.8.35ubuntu2/debian/if-up.d/resolved if-up.d_resolved 12c12 < mystatedir statedir ifindex interface --- > # local mystatedir statedir ifindex interface 39,40c39,40 < DNS=DNS < DOMAINS=DOMAINS --- > DNS=$DNS > DOMAINS=$DOMAINS 42,43c42,43 < DNS=DNS6 < DOMAINS=DOMAINS6 --- > DNS=$DNS6 > DOMAINS=$DOMAINS6 47c47 < "$DNS"="$NEW_DNS" --- > DNS="$NEW_DNS" 51c51 < "$DOMAINS"="$NEW_DOMAINS" --- > DOMAINS="$NEW_DOMAINS" 70c70 < DNS DNS6 DOMAINS DOMAINS6 DEFAULT_ROUTE --- > # local DNS DNS6 DOMAINS DOMAINS6 DEFAULT_ROUTE $ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1910273/+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
[Touch-packages] [Bug 1910273] Re: Upgrade to groovy breaks DNS resolution
*** This bug is a duplicate of bug 1907878 *** https://bugs.launchpad.net/bugs/1907878 ** This bug has been marked a duplicate of bug 1907878 wrong var declaration in if-up.d/resolved (nm-dispatcher[54417]: /etc/network/if-up.d/resolved: 12: mystatedir: not found) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ifupdown in Ubuntu. https://bugs.launchpad.net/bugs/1910273 Title: Upgrade to groovy breaks DNS resolution Status in ifupdown package in Ubuntu: Confirmed Bug description: ~# lsb_release -rd Description: Ubuntu 20.10 Release: 20.10 ~# apt-cache policy ifupdown ifupdown: Instalēts: 0.8.35ubuntu2 Kandidāts: 0.8.35ubuntu2 Versiju tabula: *** 0.8.35ubuntu2 500 500 http://mirrors.digitalocean.com/ubuntu groovy/universe amd64 Packages 100 /var/lib/dpkg/status ~# Problem: Upon upgrade from Ubuntu 20.04 to Ubuntu 20.10, I expected name resolution upon reboot to work as usual. What happened: a) /var/log/syslog sprinkled with error messages: - /etc/network/if-up.d/resolved: 12: mystatedir: not found - /etc/network/if-up.d/resolved: 70: DNS: not found - /etc/network/if-up.d/resolved: 1: /run/network/ifupdown-inet-eth0: DNS=8.8.8.8 8.8.4.4: not found b) resolvectl dns returning no name servers Investigation: Recently changed /etc/network/if-up.d/resolved and /etc/network/if-down.d/resolved files contain programming errors. See https://git.launchpad.net/ubuntu/+source/ifupdown/commit/?id=54fec5eedfd59adaffe9021c271914578dd05d1b . Fix: $ diff /Users/pklavins/Downloads/ifupdown-0.8.35ubuntu2/debian/if-down.d/resolved if-down.d_resolved 12c12 < mystatedir statedir ifindex interface --- > # local mystatedir statedir ifindex interface $ diff /Users/pklavins/Downloads/ifupdown-0.8.35ubuntu2/debian/if-up.d/resolved if-up.d_resolved 12c12 < mystatedir statedir ifindex interface --- > # local mystatedir statedir ifindex interface 39,40c39,40 < DNS=DNS < DOMAINS=DOMAINS --- > DNS=$DNS > DOMAINS=$DOMAINS 42,43c42,43 < DNS=DNS6 < DOMAINS=DOMAINS6 --- > DNS=$DNS6 > DOMAINS=$DOMAINS6 47c47 < "$DNS"="$NEW_DNS" --- > DNS="$NEW_DNS" 51c51 < "$DOMAINS"="$NEW_DOMAINS" --- > DOMAINS="$NEW_DOMAINS" 70c70 < DNS DNS6 DOMAINS DOMAINS6 DEFAULT_ROUTE --- > # local DNS DNS6 DOMAINS DOMAINS6 DEFAULT_ROUTE $ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1910273/+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
[Touch-packages] [Bug 1910273] Re: Upgrade to groovy breaks DNS resolution
*** This bug is a duplicate of bug 1907878 *** https://bugs.launchpad.net/bugs/1907878 Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: ifupdown (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ifupdown in Ubuntu. https://bugs.launchpad.net/bugs/1910273 Title: Upgrade to groovy breaks DNS resolution Status in ifupdown package in Ubuntu: Confirmed Bug description: ~# lsb_release -rd Description: Ubuntu 20.10 Release: 20.10 ~# apt-cache policy ifupdown ifupdown: Instalēts: 0.8.35ubuntu2 Kandidāts: 0.8.35ubuntu2 Versiju tabula: *** 0.8.35ubuntu2 500 500 http://mirrors.digitalocean.com/ubuntu groovy/universe amd64 Packages 100 /var/lib/dpkg/status ~# Problem: Upon upgrade from Ubuntu 20.04 to Ubuntu 20.10, I expected name resolution upon reboot to work as usual. What happened: a) /var/log/syslog sprinkled with error messages: - /etc/network/if-up.d/resolved: 12: mystatedir: not found - /etc/network/if-up.d/resolved: 70: DNS: not found - /etc/network/if-up.d/resolved: 1: /run/network/ifupdown-inet-eth0: DNS=8.8.8.8 8.8.4.4: not found b) resolvectl dns returning no name servers Investigation: Recently changed /etc/network/if-up.d/resolved and /etc/network/if-down.d/resolved files contain programming errors. See https://git.launchpad.net/ubuntu/+source/ifupdown/commit/?id=54fec5eedfd59adaffe9021c271914578dd05d1b . Fix: $ diff /Users/pklavins/Downloads/ifupdown-0.8.35ubuntu2/debian/if-down.d/resolved if-down.d_resolved 12c12 < mystatedir statedir ifindex interface --- > # local mystatedir statedir ifindex interface $ diff /Users/pklavins/Downloads/ifupdown-0.8.35ubuntu2/debian/if-up.d/resolved if-up.d_resolved 12c12 < mystatedir statedir ifindex interface --- > # local mystatedir statedir ifindex interface 39,40c39,40 < DNS=DNS < DOMAINS=DOMAINS --- > DNS=$DNS > DOMAINS=$DOMAINS 42,43c42,43 < DNS=DNS6 < DOMAINS=DOMAINS6 --- > DNS=$DNS6 > DOMAINS=$DOMAINS6 47c47 < "$DNS"="$NEW_DNS" --- > DNS="$NEW_DNS" 51c51 < "$DOMAINS"="$NEW_DOMAINS" --- > DOMAINS="$NEW_DOMAINS" 70c70 < DNS DNS6 DOMAINS DOMAINS6 DEFAULT_ROUTE --- > # local DNS DNS6 DOMAINS DOMAINS6 DEFAULT_ROUTE $ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1910273/+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
