pump mishandles DNS domain and NIS domain. It may be caused
by confusion from ISC dhcp. In /etc/dhcpd.conf, you can define

option nis-domain "foo.com";
option domain-name "bar.foo.com foo.com";

The nis-domain option sets the NIS domain name. But the
domain-name option is quite misleading. In fact, it is
the value of the search field in /etc/resolv.conf.
"dns-search-domain" may be a better name. You can do

# find -type f | xargs grep domain-name

in the dhcp 2.0 source tree to see how it is used.

In any case, pump has several problems:

1. It cannot handle

option domain-name "bar.foo.com foo.com";

2. It doesn't record the NIS domainname and
it tries to use the domain-name to set
the NIS domainname.

3. --lookup-hostname will remove the
domain-name name.

H.J.