{% if MGMT_INTERFACE %} net.ipv6.conf.eth0.accept_ra_defrtr = 0 net.ipv6.conf.eth0.accept_ra = 0 {% else %} net.ipv6.conf.eth0.accept_ra_defrtr = 1 net.ipv6.conf.eth0.accept_ra = 1 {% endif %} {# socket memory allocation size = (default value)20480 * 2 #} net.core.optmem_max=40960