Bug 1021489 - initscripts does not respect ARPCHECK setting
initscripts does not respect ARPCHECK setting
Product: Fedora
Classification: Fedora
Component: initscripts (Show other bugs)
Unspecified Linux
unspecified Severity high
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Assigned To: Lukáš Nykrýn
Fedora Extras Quality Assurance
Depends On:
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Reported: 2013-10-21 07:48 EDT by Catalin(ux) M. BOIE
Modified: 2015-02-18 06:37 EST (History)
4 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2015-02-18 06:37:41 EST
Type: Bug
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Description Catalin(ux) M. BOIE 2013-10-21 07:48:41 EDT
Description of problem:
ARPCHECK is not respected.
If I am setting ARPCHECK1="no", still the duplication message appears.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Make a computer on the network to always respond to arp requests (I have a Cisco that is doing it).
2. Add ARPCHECK="no"
3. Restart network.

Actual results:
Error, some other host already uses address x.x.x.x.

Expected results:
No output.

Additional info:
The problem is in ifup-eth: when REALDEVICE="ethx", ARPCHECK[idx]=no,
[ "${REALDEVICE}" != "lo" ] && [ "${arpcheck[$idx]}" != "no" ] evaluates to "1". And the error message is shown and sadly, an "exit 1" is performed.

I will rewrite that code like this:
if [ "${REALDEVICE}" != "lo" ]; then
        if [ "${arpcheck[${idx}}]" != "no" ]; then
                /sbin/arping -q -c 2 -w 3 -D -I ${REALDEVICE} ${ipaddr[$idx]}
                if [ "${?}" = "1" ]; then
                        net_log $"Error, some other host already uses address ${ipaddr[$idx]}."
                        exit 1

Thank you!
Comment 1 Lukáš Nykrýn 2013-10-21 07:58:09 EDT
I think this was fixed in 9.48 https://git.fedorahosted.org/cgit/initscripts.git/commit/?id=ce8b72f604079a5516a12f840ed6a64629b0131e
I will backport it.
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