Bug 1109588
| Summary: | Determining if ipaddress is already in use | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Harald Reindl <h.reindl> | ||||
| Component: | initscripts | Assignee: | Lukáš Nykrýn <lnykryn> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Jan Ščotka <jscotka> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 6.5 | CC: | jscotka, lnykryn, psklenar | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | initscripts-9.03.47-1.el6 | Doc Type: | Bug Fix | ||||
| Doc Text: |
Cause:
Network aliases did not inherit ARPCHECK variable from their parent.
Consequence:
Annoying behavior where parents where not checked for duplicit ip addresses but their aliases did that.
Fix:
inherit ARPCHECK variable from parents for alias devices.
Result:
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Story Points: | --- | ||||
| Clone Of: | |||||||
| : | 1273286 (view as bug list) | Environment: | |||||
| Last Closed: | 2015-07-22 07:18:34 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | |||||||
| Bug Blocks: | 1273286 | ||||||
| Attachments: |
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> don't do this check, it takes minutes to bring up networking on machines
> with a lot of aliases for eth0 - it's really the administrators problem if
> he configures two machines on the same network with the same IP address
Yes I agree that this is annoying, but unfortunately there were bugs saying the opposite.
Anyway ARPCHECK=no should work for you.
thanks "ARPCHECK=no" in all ifcfg-eth0:*X files works, i tried to find out if there is a config variable but without luck interesting sidenote: i tried to put it in /etc/sysconfig/network and "service network restart" looked fine, good that i verfied it with a reboot :-) This variable is mentioned in sysconfig.txt (it is somewhere in /usr/share/doc/initscripts*). But aliases interface could probably inherit ARPCHECK=no from the parent device configuration file. And btw, are you aware that you can cover range of ip addresses by a range file? something like /etc/sysconfig/network-scripts/ifcfg-eth0-range0 IPADDR_START=192.168.0.100 IPADDR_END=192.168.0.200 CLONENUM_START=0 i was not sure if it's worth to try inherit from parent after /etc/sysconfig/network was not inhertited and finally it took the same time to add the line in 50 config files as if it would not have worked wait until the network is up sadly while doing that checks the parent IP is also unreachable from network yes i know about ranges, that's a honeypot which uses every currently reserved public IP address, so no clean ranges and the idea is if one of the IP's is used for a new production service delete the file named with the kast IP-segment and restart network on the honeypot strange BTW that the setting kills network.service on F19 but not F20, the code is not the same as in the RHEL initscripts but the checks seems to be similar https://bugzilla.redhat.com/show_bug.cgi?id=1109725 Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2015-1380.html |
Created attachment 908932 [details] screenshot of a booting honeypot don't do this check, it takes minutes to bring up networking on machines with a lot of aliases for eth0 - it's really the administrators problem if he configures two machines on the same network with the same IP address [root@honeypot:/etc/sysconfig/network-scripts]$ cat ifup-eth | grep "already in use" echo $"Determining if ip address ${ipaddr[$idx]} is already in use for device ${REALDEVICE}..."