Date: Fri, 28 Sep 2007 21:49:00 GMT From: Warren Block <wblock@wonkity.com> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/116722: ntpd core dumps if hostnames are not specifed with "-4" option Message-ID: <200709282149.l8SLn0sw050503@www.freebsd.org> Resent-Message-ID: <200709282150.l8SLo1cG031827@freefall.freebsd.org>
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>Number: 116722 >Category: misc >Synopsis: ntpd core dumps if hostnames are not specifed with "-4" option >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Sep 28 21:50:01 GMT 2007 >Closed-Date: >Last-Modified: >Originator: Warren Block >Release: 6.2-STABLE >Organization: >Environment: FreeBSD speedy.wonkity.com 6.2-STABLE FreeBSD 6.2-STABLE #0: Fri Sep 28 13:51:02 MDT 2007 root@speedy.wonkity.com:/usr/obj/usr/src/sys/SPEEDY i386 >Description: Client system using ntpd has a kernel with only IPv4. ntpd core dumps if hostnames are used without specific IPv4 notation. >How-To-Repeat: Compile/install kernel with INET but without INET6 kernel option. In /etc/ntp.conf, use only server name: # bad /etc/ntp.conf server wonkity.com This causes ntpd to core dump on startup: speedy kernel: pid 1276 (ntpd), uid 0: exited on signal 11 (core dumped) ntpd starts and runs normally if an IP address is used or if hostnames are preceded with the poorly-documented "-4" option: # good /etc/ntp.conf server 10.0.0.1 server -4 wonkity.com >Fix: Workaround: when running ntpd on clients with only IPv4, use IP addresses or precede hostnames with "-4" in /etc/ntp.conf. >Release-Note: >Audit-Trail: >Unformatted:
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