Description of problem: When I kill dhclient, NM notices it but doesn't try to run new instance as it was always doing. Version-Release number of selected component (if applicable): NetworkManager-0.9.9.0-7.git20130724.fc20.x86_64 and later How reproducible: Always Steps to Reproduce: 1. killall dhclient 2. systemctl status NetworkManager Actual results: NetworkManager[4291]: <info> (em1): DHCPv4 client pid 4319 exited with status -1 NetworkManager[4291]: <warn> DHCP client died abnormally Expected results: NetworkManager[4061]: <info> (em1): DHCPv4 client pid 4094 exited with status -1 NetworkManager[4061]: <warn> DHCP client died abnormally NetworkManager[4061]: <info> (em1): device state change: activated -> failed (reason 'ip-config-expired') [100 120 6] NetworkManager[4061]: <warn> Activation (em1) failed for connection 'em1' NetworkManager[4061]: <info> (em1): device state change: failed -> disconnected (reason 'none') [120 30 0] NetworkManager[4061]: <info> (em1): deactivating device (reason 'none') [0] NetworkManager[4061]: <info> Auto-activating connection 'em1'. NetworkManager[4061]: <info> Activation (em1) starting connection 'em1' NetworkManager[4061]: <info> (em1): device state change: disconnected -> prepare (reason 'none') [30 40 0] NetworkManager[4061]: <info> Activation (em1) Stage 1 of 5 (Device Prepare) scheduled... NetworkManager[4061]: <info> Activation (em1) Stage 1 of 5 (Device Prepare) started... NetworkManager[4061]: <info> Activation (em1) Stage 2 of 5 (Device Configure) scheduled... NetworkManager[4061]: <info> Activation (em1) Stage 1 of 5 (Device Prepare) complete. NetworkManager[4061]: <info> Activation (em1) Stage 2 of 5 (Device Configure) starting... NetworkManager[4061]: <info> (em1): device state change: prepare -> config (reason 'none') [40 50 0] NetworkManager[4061]: <info> Activation (em1) Stage 2 of 5 (Device Configure) successful. NetworkManager[4061]: <info> Activation (em1) Stage 3 of 5 (IP Configure Start) scheduled. NetworkManager[4061]: <info> Activation (em1) Stage 2 of 5 (Device Configure) complete. NetworkManager[4061]: <info> Activation (em1) Stage 3 of 5 (IP Configure Start) started... NetworkManager[4061]: <info> (em1): device state change: config -> ip-config (reason 'none') [50 70 0] NetworkManager[4061]: <info> Activation (em1) Beginning DHCPv4 transaction (timeout in 45 seconds) NetworkManager[4061]: <info> dhclient started with pid 4179 NetworkManager[4061]: <info> Activation (em1) Beginning IP6 addrconf. NetworkManager[4061]: <info> Activation (em1) Stage 3 of 5 (IP Configure Start) complete. dhclient[4179]: Internet Systems Consortium DHCP Client 4.2.5 Additional info: NetworkManager-0.9.9.0-5.git20130603.fc20.x86_64 is OK. There's no 9.9.0-6 build, so I could not test that one.
NetworkManager-0.9.9.0-7.git20130724.fc20.x86_64 is pretty old, can you try latest updates (20131003 at least, maybe newer) ? Next, is IPv6 enabled for that connection, and does it complete successfully? Please run "ip addr show em1" right before you kill dhclient and report the results. Thanks!
(In reply to Dan Williams from comment #1) > NetworkManager-0.9.9.0-7.git20130724.fc20.x86_64 is pretty old, can you try > latest updates (20131003 at least, maybe newer) ? Yes, I'd spotted this with 0.9.9.0-14.git20131003 and then went back to find the exact version where it started to behave like this and found 0.9.9.0-7.git20130724 (0.9.9.0-5.git20130603 is OK). > Next, is IPv6 enabled for that connection, and does it complete > successfully? Please run "ip addr show em1" right before you kill dhclient > and report the results. Thanks! Yes, it's set to Automatic, I got IPv6 address via SLAAC. # nmcli -f all connection show active NAME UUID DEVICES STATE DEFAULT DEFAULT6 em1 37392b7a-7f63-4537-bb14-b481e600ad78 em1 activated yes yes # ip addr show em1 2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:23:7d:c3:ca:2c brd ff:ff:ff:ff:ff:ff inet 10.34.4.75/23 scope global dynamic em1 valid_lft 82962sec preferred_lft 82962sec inet6 2620:52:0:2204:223:7dff:fec3:ca2c/64 scope global dynamic valid_lft 2588543sec preferred_lft 2588543sec inet6 fe80::223:7dff:fec3:ca2c/64 scope link valid_lft forever preferred_lft forever The output of these two commands doesn't change with killing dhclient.
I seem to be seeing the same: dhclient dies, and NetworkManager doesn't restart it: mar 01 22:09:59 vm1 NetworkManager[1102]: <info> NetworkManager state is now CONNECTED_GLOBAL mar 01 22:09:59 vm1 NetworkManager[1102]: <info> Policy set 'eth0' (eth0) as default for IPv4 routing and DNS. mar 01 22:09:59 vm1 NetworkManager[1102]: <info> Activation (eth0) successful, device activated. mar 01 22:10:04 vm1 NetworkManager[1102]: <info> startup complete mar 02 01:59:35 vm1 dhclient[1137]: DHCPREQUEST on eth0 to 129.174.68.227 port 67 (xid=0x4c5e96d9) mar 02 01:59:35 vm1 NetworkManager[1102]: <info> (eth0): DHCPv4 client pid 1137 exited with status -1 mar 02 01:59:35 vm1 NetworkManager[1102]: <warn> DHCP client died abnormally And there's no network after that :( I'm not sure how to extract more information about why dhclient died. I would be thankful for some tips.
(In reply to Zbigniew Jędrzejewski-Szmek from comment #3) > I'm not sure how to extract more information about why dhclient died. If it's reproducible, you can run dhclient manually via strace, like: # strace dhclient -d eth0 and attach the output to a new bug report against dhcp package. thanks.
Unfortunately it seems to happen once every few weeks, on a VM which I use so testing so I reboot it tens of times per day.
I am experiencing the very same issue on RHEL7. NetworkManager-0.9.9.1-25 I have limited environment, RHEL7 based LiveCD used for Satellite 6.0 bare metal provisioning. I am able to randomly reproduce in libvirt network (running default setup with dnsmasq DHCP server). Unfortunately the LiveCD environment is quite limiting (no strace, gdb, bare-bone system). Can you give me some hints how can I workaround this issue by configuring NetworkManager to always restart failed dhclient?
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