I am trying to get my CentOS v7 server to run IPv6. Root works, it can ping using ping6 ipv6.google.com, and ifconfig looks great; I see the lines:eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500inet 149.202.217.90  netmask 255.255.255.0  broadcast 149.202.217.255inet6 fe80::ec4:7aff:fec4:d912  prefixlen 64  scopeid 0x20<link>inet6 2001:41d0:1000:1c5a::  prefixlen 64  scopeid 0x0<global>But as an unprivileged user, I can't ping ipv6 and I don't see the inet6 addresses in ifconfig. What is happening? Why can't my users see the same interfaces, setup in the same way as root?[edit]As requested, ip a s and ping6 -c1 ipv6.google.com output:root[root@rabbit ~]# ip a s1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo       valid_lft forever preferred_lft forever    inet6 2001:41d0:1000:1c5a::/64 scope global       valid_lft forever preferred_lft forever    inet6 ::1/128 scope host       valid_lft forever preferred_lft forever2: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN    link/ether 5e:63:58:37:5d:30 brd ff:ff:ff:ff:ff:ff3: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN    link/ether 32:ad:47:94:1f:b1 brd ff:ff:ff:ff:ff:ff4: ifb0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN qlen 32    link/ether 7e:52:08:a5:1a:dd brd ff:ff:ff:ff:ff:ff5: ifb1: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN qlen 32    link/ether 3e:ba:b9:d1:09:3b brd ff:ff:ff:ff:ff:ff6: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000    link/ether 0c:c4:7a:c4:d9:12 brd ff:ff:ff:ff:ff:ff    inet 149.202.217.90/24 brd 149.202.217.255 scope global eth0       valid_lft forever preferred_lft forever    inet6 2001:41d0:1000:1c5a::/64 scope global       valid_lft forever preferred_lft forever    inet6 fe80::ec4:7aff:fec4:d912/64 scope link       valid_lft forever preferred_lft forever7: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000    link/ether 0c:c4:7a:c4:d9:13 brd ff:ff:ff:ff:ff:ff8: teql0: <NOARP> mtu 1500 qdisc noop state DOWN qlen 100    link/void9: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN    link/ipip 0.0.0.0 brd 0.0.0.010: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN    link/sit 0.0.0.0 brd 0.0.0.011: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN    link/tunnel6 :: brd ::[root@rabbit ~]# ping6 -c1 ipv6.google.comPING ipv6.google.com(par03s15-in-x0e.1e100.net) 56 data bytes64 bytes from par03s15-in-x0e.1e100.net: icmp_seq=1 ttl=57 time=6.61 ms--- ipv6.google.com ping statistics ---1 packets transmitted, 1 received, 0% packet loss, time 0msrtt min/avg/max/mdev = 6.615/6.615/6.615/0.000 msuser (pryormic)[pryormic@rabbit ~]$ ip a s1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo       valid_lft forever preferred_lft forever    inet6 2001:41d0:1000:1c5a::/64 scope global       valid_lft forever preferred_lft forever    inet6 ::1/128 scope host       valid_lft forever preferred_lft forever2: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN    link/ether 5e:63:58:37:5d:30 brd ff:ff:ff:ff:ff:ff3: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN    link/ether 32:ad:47:94:1f:b1 brd ff:ff:ff:ff:ff:ff4: ifb0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN qlen 32    link/ether 7e:52:08:a5:1a:dd brd ff:ff:ff:ff:ff:ff5: ifb1: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN qlen 32    link/ether 3e:ba:b9:d1:09:3b brd ff:ff:ff:ff:ff:ff6: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000    link/ether 0c:c4:7a:c4:d9:12 brd ff:ff:ff:ff:ff:ff    inet 149.202.217.90/24 brd 149.202.217.255 scope global eth0       valid_lft forever preferred_lft forever    inet6 2001:41d0:1000:1c5a::/64 scope global       valid_lft forever preferred_lft forever    inet6 fe80::ec4:7aff:fec4:d912/64 scope link       valid_lft forever preferred_lft forever7: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000    link/ether 0c:c4:7a:c4:d9:13 brd ff:ff:ff:ff:ff:ff8: teql0: <NOARP> mtu 1500 qdisc noop state DOWN qlen 100    link/void9: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN    link/ipip 0.0.0.0 brd 0.0.0.010: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN    link/sit 0.0.0.0 brd 0.0.0.011: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN    link/tunnel6 :: brd ::[pryormic@rabbit ~]$ ping6 -c1 ipv6.google.comping: icmp open socket: Operation not permitted[edit2]I've added ifconfig output below:root[root@rabbit ~]# ifconfigeth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500        inet 149.202.217.90  netmask 255.255.255.0  broadcast 149.202.217.255        inet6 fe80::ec4:7aff:fec4:d912  prefixlen 64  scopeid 0x20<link>        inet6 2001:41d0:1000:1c5a::  prefixlen 64  scopeid 0x0<global>        ether 0c:c4:7a:c4:d9:12  txqueuelen 1000  (Ethernet)        RX packets 12131475  bytes 2122218137 (1.9 GiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 1113935  bytes 690582284 (658.5 MiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500        ether 0c:c4:7a:c4:d9:13  txqueuelen 1000  (Ethernet)        RX packets 0  bytes 0 (0.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 6632  bytes 1169904 (1.1 MiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536        inet 127.0.0.1  netmask 255.0.0.0        inet6 ::1  prefixlen 128  scopeid 0x10<host>        inet6 2001:41d0:1000:1c5a::  prefixlen 64  scopeid 0x0<global>        loop  txqueuelen 0  (Local Loopback)        RX packets 332704  bytes 448694222 (427.9 MiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 332704  bytes 448694222 (427.9 MiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0user (pryormic)[pryormic@rabbit ~]$ ifconfigeth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500        inet 149.202.217.90  netmask 255.255.255.0  broadcast 149.202.217.255        ether 0c:c4:7a:c4:d9:12  txqueuelen 1000  (Ethernet)        RX packets 0  bytes 0 (0.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 0  bytes 0 (0.0 B)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500        ether 0c:c4:7a:c4:d9:13  txqueuelen 1000  (Ethernet)        RX packets 0  bytes 0 (0.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 0  bytes 0 (0.0 B)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536        inet 127.0.0.1  netmask 255.0.0.0        loop  txqueuelen 0  (Local Loopback)        RX packets 0  bytes 0 (0.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 0  bytes 0 (0.0 B)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
Unprivileged ping6 not working
centos;permissions;ip;ipv6;ifconfig
The following command should give users the capability to use ping6. As root runsetcap cap_net_raw+ep /usr/bin/ping