| Summary: |
Some images have 2 dhcp clients and that causes problems |
| Product: |
[Runtime] General Runtime
|
Reporter: |
Stoicescu Cornel <corneliux.stoicescu> |
| Component: |
General Runtime | Assignee: |
Saul Wold <sgw> |
| Status: |
VERIFIED
FIXED
|
QA Contact: |
Andra Necula <andrax.g.necula> |
| Severity: |
major
|
|
|
| Priority: |
Medium+
|
CC: |
andrax.g.necula
|
| Version: |
1.7 | |
|
| Target Milestone: |
1.7 M2 | |
|
| Hardware: |
All | |
|
| OS: |
Multiple | |
|
| Whiteboard: |
|
|
OS type for building Yocto:
|
---
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Type of Regression:
|
---
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|---|
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Verified:
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|
Documentation change:
|
No (bug/feature does not impact docs)
|
|---|
As the title says, some images like core-image-sato-sdk have 2 DHCP clients and this causes a conflict. The the case of core-image-sato-sdk, there is connman and busibox's udhcpc. Steps to reproduce: 1) Boot the image inside a network that has a fast IP address renewing DHCP server. In our case the IP was given on a per-MAC basis. 2) issue 'ps | grep dhcp" and notice: root@genericx86-64:~# ps | grep dhcp 650 root 4728 S udhcpc -R -b -p /var/run/udhcpc.eth0.pid -i eth0 3) Wait for the dhcp lease to expire. Notice in /var/log/messages: ... Jul 10 11:30:27 genericx86-64 daemon.info connmand[660]: eth0 {del} route 0.0.0.0 gw 192.168.99.1 scope 0 <UNIVERSE> Jul 10 11:30:27 genericx86-64 daemon.info connmand[660]: eth0 {add} route 0.0.0.0 gw 192.168.99.1 scope 0 <UNIVERSE> Jul 10 11:30:27 genericx86-64 daemon.info connmand[660]: eth0 {del} route 0.0.0.0 gw 192.168.99.1 scope 0 <UNIVERSE> Jul 10 11:30:27 genericx86-64 daemon.info connmand[660]: eth0 {add} route 0.0.0.0 gw 192.168.99.1 scope 0 <UNIVERSE> Jul 10 11:30:27 genericx86-64 daemon.info connmand[660]: eth0 {del} route 0.0.0.0 gw 192.168.99.1 scope 0 <UNIVERSE> Jul 10 11:30:27 genericx86-64 daemon.info connmand[660]: eth0 {add} route 0.0.0.0 gw 192.168.99.1 scope 0 <UNIVERSE> Jul 10 11:30:27 genericx86-64 daemon.info connmand[660]: eth0 {del} route 0.0.0.0 gw 192.168.99.1 scope 0 <UNIVERSE> Jul 10 11:30:27 genericx86-64 daemon.info connmand[660]: eth0 {add} route 0.0.0.0 gw 192.168.99.1 scope 0 <UNIVERSE> ... These messages go on forever and the result is intermittent loss connectivity. Operations such as using the smart package manager are affected and sometimes fail with 'Network is unreachable'. 4) issue 'ps | grep dhcp" and notice: root@genericx86-64:~# ps | grep dhcp 650 root 4728 S udhcpc -R -b -p /var/run/udhcpc.eth0.pid -i eth0 807 root 4728 S run-parts -a renew /etc/udhcpc.d 808 root 18840 R {50default} /bin/sh /etc/udhcpc.d/50default renew NOTES: - killing the "{50default} /bin/sh /etc/udhcpc.d/50default renew" process solves the issue for the moment. Rebooting the image will bring it back though. - Issuing 'smart remove busybox-udhcpc' will permanently solve the issue, even though 'ps | grep dhcp' still shows the same as with the package installed: root@genericx86-64:~# ps | grep dhcp 650 root 4728 S udhcpc -R -b -p /var/run/udhcpc.eth0.pid -i eth0 - The only images I tested so far for this are core-image-sato-sdk for genericx86-64 and beaglebone. - An email thread on the subject: https://lists.connman.net/pipermail/connman/2013-December/016272.html