- Relaxed the check of the domain-name option causing a regression,
when the server is misusing it to provide a domain list and does
not provide it using the domain-search option (bnc#675052).

- bnc#675052 - discard string options such as host and domain names
containing disallowed characters or beeing too long. This proctive
patch limits root-path to a-zA-Z0-9, #%+-_:.,@~/\[]= and a space
(CVE-2011-0996).
- fixed to read netbios scope from info file as string
- bnc#668194 - handle packets with xen partial UDP checksums
- bnc#657402 - send renew messages as unicast directly to the server