CentOS Errata and Security Advisory 2007:0387
https://rhn.redhat.com/errata/RHSA-2007-0387.html
The following updated files have been uploaded and are currently syncing to the mirrors:
s390: updates/s390/RPMS/arpwatch-2.1a13-12.el4.s390.rpm updates/s390/RPMS/libpcap-0.8.3-12.el4.s390.rpm updates/s390/RPMS/tcpdump-3.8.2-12.el4.s390.rpm
s390x: updates/s390x/RPMS/arpwatch-2.1a13-12.el4.s390x.rpm updates/s390x/RPMS/libpcap-0.8.3-12.el4.s390x.rpm updates/s390x/RPMS/tcpdump-3.8.2-12.el4.s390x.rpm