IPv6 RA commands ipv6 nd cache-limit ipv6 nd dad attempts ipv6 nd hop-limit ipv6 nd mtu ipv6 nd ns-interval ipv6 nd prefix ipv6 nd ra dns search-list ipv6 nd ra dns server ipv6 nd ra lifetime ipv6 nd ra managed-config-flag ipv6 nd ra max-interval ipv6 nd ra min-interval ipv6 nd ra other-config-flag ipv6 nd ra reachable-time ipv6 nd ra retrans-timer ipv6 nd router-preference ipv6 nd suppress-ra show ipv6 nd global traffic show ipv6 nd interface show ipv6 nd interface prefix show ipv6 nd ra dns search-list show ipv6 nd ra dns server