Scanning system with nmap causes slapd to exit on sig 11 (ITS#579)

[atrus@atrustrivalie.eu.org]

Full_Name: Yann Ramin
Version: 1.2.10-RELEASE
OS: FreeBSD 4.0
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (216.200.48.197)


Scanning a remote system with NMap 2.12 (from www.insecure.org/nmap/) causes
slapd on the remote system to coredump (exit on signal 11)

NMap sees the LDAP port open as well:
Starting nmap V. 2.12 by Fyodor (fyodor@dhp.com, www.insecure.org/nmap/)
Interesting ports on  (192.168.0.41):
Port    State       Protocol  Service
22      open        tcp        ssh
23      open        tcp        telnet
389     open        tcp        ldap
 
Nmap run completed -- 1 IP address (1 host up) scanned in 8 seconds  

I haven't had a chance to run gdb on slapd, or try another type of scan other
than the default connect()
A temporary workaround is to install kernel options to make port-scanning
difficult.