> It seems this issue may occur not only when receiving addresses on multiple interfaces, but also when dhcp requests on multiple interfaces times out and the hook script was called with 'reason' == FAIL.
yep, the try-reload-or-restart is done for those as well and this should be fixed for those $reason cases; since this bug is already resolved, I suggest you open a new bug. -- 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/1939255 Title: dhclient triggers systemd-resolved start limit when processing more than 5 interfaces at once Status in systemd package in Ubuntu: Invalid Status in systemd source package in Bionic: Fix Released Status in systemd source package in Focal: Fix Released Bug description: [impact] on a system where systemd-resolved is running, if dhclient is used on more than 5 interfaces, it calls the '/etc/dhcp/dhclient-enter- hooks.d/resolved' script multiple times, which then restarts systemd- resolved multiple times, triggering the unit's start-limit throttle which results in the unit entering failed state [test case] on a system with more than 5 available interfaces to run dhclient on (where all the interfaces will get a dhcp response), run dhclient with the interfaces: $ dhclient ens8 ens9 ens10 ens11 ens12 ens13 ens14 ens15 check if systemd-resolved failed: $ journalctl -b -1 -u systemd-resolved ... Aug 09 00:38:08 sf316232-b systemd[1]: systemd-resolved.service: Start request repeated too quickly. Aug 09 00:38:08 sf316232-b systemd[1]: systemd-resolved.service: Failed with result 'start-limit-hit'. Aug 09 00:38:08 sf316232-b systemd[1]: Failed to start Network Name Resolution. [regression potential] failure to start/stop/restart systemd-resolved, or problems adding dhclient-provided DNS nameservers to systemd-resolved [scope] this is needed only for b/f the dhclient 'hook' script is provided by the systemd package in focal and earlier, and needs fixing in those releases in h and later, the 'hook' script is included in the isc-dhcp-client package and notifies systemd-resolved in a more direct way without requiring restarting, and so doesn't trigger the restart limiting. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1939255/+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
