ipset -N namegroup iphash
ipset v7.1: Kernel error received: set type not supported
nethash
iphash
ip_set_hash_net 36021 19
ip_set 45799 2 ip_set_hash_net,xt_set
ip_set_hash_ip 32768 1
ip_set 40960 2 ip_set_hash_ip,xt_set
nfnetlink 16384 1 ip_set
lsmod | grep ip_set
ip_set_hash_net 36021 19
ip_set 45799 2 ip_set_hash_net,xt_set
[root@78-110-60-22 ~]# cat /etc/os-release
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"