In the hope that this helps someone. I spent most of today fighting this and found a solution.
d-i preseed/early_command string grep -q options /etc/resolv.conf || echo "options single-request" >> /etc/resolv.conf ;
and then
d-i preseed/late_command string grep -q options /etc/resolvconf/resolv.conf.d/tail || echo "options single-request" >> /etc/resolvconf/resolv.conf.d/tail ;
The difference in speed of install is marked.
In the hope that this helps someone. I spent most of today fighting this and found a solution.
d-i preseed/ early_command string grep -q options /etc/resolv.conf || echo "options single-request" >> /etc/resolv.conf ;
and then
d-i preseed/ late_command string grep -q options /etc/resolvconf /resolv. conf.d/ tail || echo "options single-request" >> /etc/resolvconf /resolv. conf.d/ tail ;
The difference in speed of install is marked.