libdnet from home:pgajdos project

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:pgajdos/openSUSE_Tumbleweed/home:pgajdos.repo
zypper refresh
zypper install libdnet

For 15.6 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:pgajdos/15.6/home:pgajdos.repo
zypper refresh
zypper install libdnet

For 15.5 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:pgajdos/15.5/home:pgajdos.repo
zypper refresh
zypper install libdnet

For SLE 15 SP4 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:pgajdos/SLE_15_SP4/home:pgajdos.repo
zypper refresh
zypper install libdnet