There are 4 IP addresses, 2 IPv4 and 2 IPv6 in dual stack on one network interface card. I don't want to use NetworkManager, so i deactivate it before. With IPv4 now everything is working, but not with IPv6. So i think in principle IPv6 is working on ping6 -c4 ::1Ħ4 bytes from ::1: icmp_seq=1 ttl=64 time=0.058 msĦ4 bytes from ::1: icmp_seq=2 ttl=64 time=0.064 msĦ4 bytes from ::1: icmp_seq=3 ttl=64 time=0.066 msĦ4 bytes from ::1: icmp_seq=4 ttl=64 time=0.077 msĤ packets transmitted, 4 received, 0% packet loss, time 2999ms
PING xxxx:xxxx::1(xxxx:xxxx::1) 56 data bytesįrom xxxx:xxxx::2 icmp_seq=1 Destination unreachable: Address unreachableįrom xxxx:xxxx::2 icmp_seq=2 Destination unreachable: Address unreachableįrom xxxx:xxxx::2 icmp_seq=3 Destination unreachable: Address unreachableįrom xxxx:xxxx::2 icmp_seq=4 Destination unreachable: Address unreachableĤ packets transmitted, 0 received, +4 errors, 100% packet loss, time 3000msĪt last, the localhost on loopback. PING ( (2a00:1450:4001:81d::200e)) 56 data bytesįrom computer (xxxx.xxxx::2) icmp_seq=1 Destination unreachable: Address unreachableįrom computer (xxxx.xxxx::2) icmp_seq=2 Destination unreachable: Address unreachableįrom computer (xxxx.xxxx::2) icmp_seq=3 Destination unreachable: Address unreachableįrom computer (xxxx.xxxx::2) icmp_seq=4 Destination unreachable: Address unreachableĤ packets transmitted, 0 received, +4 errors, 100% packet loss, time 3001ms The result is: i can't ping IPv6 Adresses. I think similar in the IPv4 routing table, the IP must have an relation between the device (eth0) and the Loopback device and not on my eth0 ethernet-card. In the routing table both IPv6 addresses stands on Ziel Router Genmask Flags Metric Ref Use IfaceĠ.0.0.0 .1 0.0.0.0 UG 0 0 0 eth0 and the routing-table (first IPv4 and then route -4n Inet6 fe80::xxxx:xxxx:xxxx:xxxx/64 scope link Inet6 xxxx:xxxx::3/64 scope global <- The second IPv6 Address Inet6 xxxx:xxxx::2/64 scope global <- The first IPv6 Address Inet .3/24 brd .255 scope global eth0 <- The second IPv4 Address Inet .2/24 brd .255 scope global eth0 <- The first IPv4 Address if-cfg-eth0:1 has only the second IPv4 cat cat /etc/sysconfig/network-scripts/ifcfg-eth0:1Īfter the System has started, the following IP settings are ip addr showġ: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 Ifcfg-eth0 has also the two IPv6 addresses. I have two IPv4 addresses, that is the reason why there are ifcfg-eth0 and ifcfg-eth0:1. The meta network cat /etc/sysconfig/network Used by the system with and without NetworkManager. The following three scripts are the CentOS Network Configuration Scripts in generally Here are the facts:įirst, the CentOS version i cat /etc/centos-release I think it isn't right, that my IPv6 addresses from eth0 was routed via loopback in the IPv6 routing-table. I have some trouble with ipv4 and ipv6 dual stack on my centos box.
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