This is normal behaviour. In IPv4 each interface could have only one address. To add more addresses you had to create 'fake' interfaces like eth0:1
. IPv6 always has multiple addresses per interface so work-arounds like eth0:1
are not used for IPv6.
Adding multiple ipv6 addresses to a single interface using ioctl
質問
I am trying to port my application to ipv6 and my current code brings up alias IP addresses dynamically as shown:
eth0 Link encap:Ethernet HWaddr 00:16:35:68:21:5B
inet addr:192.168.1.245 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::216:35ff:fe68:215b/64 Scope:Link
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:278885750 errors:0 dropped:0 overruns:0 frame:0
TX packets:68117973 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:68976932662 (64.2 GiB) TX bytes:39384521280 (36.6 GiB)
Interrupt:169
eth0:1 Link encap:Ethernet HWaddr 00:16:35:68:21:5B
inet addr:192.168.1.246 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MTU:1500 Metric:1
Interrupt:169
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:6060179 errors:0 dropped:0 overruns:0 frame:0
TX packets:6060179 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2366257047 (2.2 GiB) TX bytes:2366257047 (2.2 GiB)
eth0:1 will be added dynamically by the application. It uses ioctl to do this. I want to do the same for IPV6 address. I tried this Assign ipv6 address using ioctl. But the example code is adding IPV6 address to the existing interface eth0 instead of eth0:1 or eth0:2 even if I specify the interface name as eth0:1. Can anyone please help since I am new to IPV6.
解決
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