Also noted behavior. After updating to 20.04 DHCP leases are not renewed after boot. Unsure if related to above issues, but might be in the ballpark.
Prior to the upgrade: Apr 22 14:57:58 fancy dhclient[3068]: DHCPACK of 158.174.x.x from 212.116.x.x Apr 22 19:35:49 fancy dhclient[3068]: DHCPREQUEST of 158.174.x.x on br_ext_prim to 212.116.x.x port 67 (xid=0x477b0bc1) Apr 22 19:35:49 fancy dhclient[3068]: DHCPACK of 158.174.x.x from 212.116.x.x Apr 23 01:25:50 fancy dhclient[3068]: DHCPREQUEST of 158.174.x.x on br_ext_prim to 212.116.x.x port 67 (xid=0x477b0bc1) Apr 23 01:25:50 fancy dhclient[3068]: DHCPACK of 158.174.x.x from 212.116.x.x Apr 23 07:21:56 fancy dhclient[3068]: DHCPREQUEST of 158.174.x.x on br_ext_prim to 212.116.x.x port 67 (xid=0x477b0bc1) Apr 23 07:21:56 fancy dhclient[3068]: DHCPACK of 158.174.x.x from 212.116.x.x Apr 23 12:08:44 fancy dhclient[3068]: DHCPREQUEST of 158.174.x.x on br_ext_prim to 212.116.x.x port 67 (xid=0x477b0bc1) Apr 23 12:08:44 fancy dhclient[3068]: DHCPACK of 158.174.x.x from 212.116.x.x Apr 23 16:50:09 fancy dhclient[3068]: DHCPREQUEST of 158.174.x.x on br_ext_prim to 212.116.x.x port 67 (xid=0x477b0bc1) Apr 23 16:50:09 fancy dhclient[3068]: DHCPACK of 158.174.x.x from 212.116.x.x Like clockwork. After upgrade: Apr 23 19:39:41 fancy audit[1053]: AVC apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=1053 comm="apparmor_parser" Apr 23 19:39:41 fancy audit[1053]: AVC apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=1053 comm="apparmor_parser" Apr 23 19:39:42 fancy dhclient[1254]: Internet Systems Consortium DHCP Client 4.4.1 Apr 23 19:39:42 fancy ifup[1254]: Internet Systems Consortium DHCP Client 4.4.1 Apr 23 19:39:42 fancy ifup[1254]: For info, please visit https://www.isc.org/software/dhcp/ Apr 23 19:39:42 fancy dhclient[1254]: For info, please visit https://www.isc.org/software/dhcp/ Apr 23 19:39:42 fancy ifup[1254]: DHCPDISCOVER on br_ext_prim to 255.255.255.255 port 67 interval 3 (xid=0xfb894100) Apr 23 19:39:42 fancy dhclient[1254]: DHCPDISCOVER on br_ext_prim to 255.255.255.255 port 67 interval 3 (xid=0xfb894100) Apr 23 19:39:45 fancy dhclient[1254]: DHCPDISCOVER on br_ext_prim to 255.255.255.255 port 67 interval 4 (xid=0xfb894100) Apr 23 19:39:45 fancy ifup[1254]: DHCPDISCOVER on br_ext_prim to 255.255.255.255 port 67 interval 4 (xid=0xfb894100) Apr 23 19:39:49 fancy dhclient[1254]: DHCPDISCOVER on br_ext_prim to 255.255.255.255 port 67 interval 7 (xid=0xfb894100) Apr 23 19:39:49 fancy ifup[1254]: DHCPDISCOVER on br_ext_prim to 255.255.255.255 port 67 interval 7 (xid=0xfb894100) Apr 23 19:39:50 fancy dhclient[1254]: DHCPOFFER of 158.174.x.x from 212.116.65.157 Apr 23 19:39:50 fancy ifup[1254]: DHCPOFFER of 158.174.x.x from 212.116.65.157 Apr 23 19:39:50 fancy ifup[1254]: DHCPREQUEST for 158.174.x.x on br_ext_prim to 255.255.255.255 port 67 (xid=0x4189fb) Apr 23 19:39:50 fancy dhclient[1254]: DHCPREQUEST for 158.174.x.x on br_ext_prim to 255.255.255.255 port 67 (xid=0x4189fb) Apr 23 19:39:50 fancy dhclient[1254]: DHCPACK of 158.174.x.x from 212.116.65.157 (xid=0xfb894100) Apr 23 19:39:50 fancy ifup[1254]: DHCPACK of 158.174.x.x from 212.116.65.157 (xid=0xfb894100) No additional logs after yesterday at 19:39:50. The lease expired today at 07:39:50 and the primary network connection died. Nothing more exceptional than restarting dhclient. Still annoying. Maybe related. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1874515 Title: 20.04 does not bring up certain bridges To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1874515/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
