For SLE 15 SP4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/SLE_15_SP4/security.repo
zypper refresh
zypper install arp-scan
For SLE 15 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/SLE_15_SP3/security.repo
zypper refresh
zypper install arp-scan
For SLE 15 SP2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/SLE_15_SP2/security.repo
zypper refresh
zypper install arp-scan
For SLE 15 SP1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/SLE_15_SP1/security.repo
zypper refresh
zypper install arp-scan
For SLE 12 SP5 Update run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/SLE_12_SP5_Update/security.repo
zypper refresh
zypper install arp-scan
For SLE 12 SP5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/SLE_12_SP5/security.repo
zypper refresh
zypper install arp-scan
For SLE 12 SP4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/SLE_12_SP4/security.repo
zypper refresh
zypper install arp-scan
For SLE 12 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security/SLE_12_SP3/security.repo
zypper refresh
zypper install arp-scan