This update for dhcp fixes the following issues:

- CVE-2015-8605: A remote attacker could have used badly formed packets with an invalid IPv4 UDP length field to cause a DHCP server, client, or relay program to terminate abnormally (boo#961305)

The following bugs were fixed:

- boo#936923: Improper lease duration checking
- boo#880984: Integer overflows in the date and time handling code
- boo#956159: fixed service files to start dhcpd after slapd
- boo#960506: Improve exit reason and logging when /sbin/dhclient-script is unable to pre-init requested interface
- boo#947780: DHCP server could abort with "Unable to set up timer: out of range" on very long or infinite timer intervals / lease lifetimes
- boo#912098: dhclient could pretend to run while silently declining leases
- boo#919959: server: Do not log success report before send reported success
- boo#928390: dhclient dit not expose next-server DHCPv4 option to script
- boo#926159: DHCP preferrend and valid lifetime would be logged incorrectly
- boo#910686: Prevent a dependency conflict of dhcp-devel with bind-devel package