gpu机器没有开启ipv6
参考：
https://blog.csdn.net/asdfaa/article/details/137884414
检查系统是否支持 IPv6,查看被禁用了
在启用 IPv6 之前，首先要确保您的系统支持 IPv6。要检查内核是否启用了 IPv6，可以运行以下命令：
cat /proc/sys/net/ipv6/conf/all/disable_ipv6
如果返回的结果为 0，则说明您的系统支持 IPv6。如果结果为 1，您需要启用 IPv6，然后重新检查。
检查下面两个服务。opensmd 没有启动，直接启动，然后用ibstat命令
systemctl status opensmd
systemctl status openibd
ibstat
cat /proc/sys/net/ipv6/conf/all/disable_ipv6
echo 1 >/proc/sys/net/ipv6/conf/all/disable_ipv6
一开始端口是down， 现在是active，然后就可以用了
root@gpumcw2:/home/mcw# ibstat
CA 'mlx5_0'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae03009cc36c
System image GUID: 0x946dae03009cc36c
Port 1:
State: Initializing
Physical state: LinkUp
Rate: 200
Base lid: 65535
LMC: 0
SM lid: 0
Capability mask: 0xa651e848
Port GUID: 0x946dae03009cc36c
Link layer: InfiniBand
CA 'mlx5_1'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae03009cc364
System image GUID: 0x946dae03009cc364
Port 1:
State: Initializing
Physical state: LinkUp
Rate: 200
Base lid: 65535
LMC: 0
SM lid: 0
Capability mask: 0xa651e848
Port GUID: 0x946dae03009cc364
Link layer: InfiniBand
CA 'mlx5_2'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae0300b00278
System image GUID: 0x946dae0300b00278
Port 1:
State: Down
Physical state: Polling
Rate: 10
Base lid: 65535
LMC: 0
SM lid: 0
Capability mask: 0xa651e848
Port GUID: 0x946dae0300b00278
Link layer: InfiniBand
CA 'mlx5_3'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae0300b00279
System image GUID: 0x946dae0300b00278
Port 1:
State: Down
Physical state: Polling
Rate: 10
Base lid: 65535
LMC: 0
SM lid: 0
Capability mask: 0xa651e848
Port GUID: 0x946dae0300b00279
Link layer: InfiniBand
CA 'mlx5_4'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae03009cc374
System image GUID: 0x946dae03009cc374
Port 1:
State: Initializing
Physical state: LinkUp
Rate: 200
Base lid: 65535
LMC: 0
SM lid: 0
Capability mask: 0xa651e848
Port GUID: 0x946dae03009cc374
Link layer: InfiniBand
CA 'mlx5_5'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae03009cef04
System image GUID: 0x946dae03009cef04
Port 1:
State: Initializing
Physical state: LinkUp
Rate: 200
Base lid: 65535
LMC: 0
SM lid: 0
Capability mask: 0xa651e848
Port GUID: 0x946dae03009cef04
Link layer: InfiniBand
root@gpumcw2:/home/mcw#
root@gpumcw2:/home/mcw# ibstat
CA 'mlx5_0'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae03009cc36c
System image GUID: 0x946dae03009cc36c
Port 1:
State: Active
Physical state: LinkUp
Rate: 200
Base lid: 2
LMC: 0
SM lid: 2
Capability mask: 0xa651e84a
Port GUID: 0x946dae03009cc36c
Link layer: InfiniBand
CA 'mlx5_1'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae03009cc364
System image GUID: 0x946dae03009cc364
Port 1:
State: Active
Physical state: LinkUp
Rate: 200
Base lid: 16
LMC: 0
SM lid: 2
Capability mask: 0xa651e848
Port GUID: 0x946dae03009cc364
Link layer: InfiniBand
CA 'mlx5_2'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae0300b00278
System image GUID: 0x946dae0300b00278
Port 1:
State: Down
Physical state: Polling
Rate: 10
Base lid: 65535
LMC: 0
SM lid: 0
Capability mask: 0xa651e848
Port GUID: 0x946dae0300b00278
Link layer: InfiniBand
CA 'mlx5_3'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae0300b00279
System image GUID: 0x946dae0300b00278
Port 1:
State: Down
Physical state: Polling
Rate: 10
Base lid: 65535
LMC: 0
SM lid: 0
Capability mask: 0xa651e848
Port GUID: 0x946dae0300b00279
Link layer: InfiniBand
CA 'mlx5_4'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae03009cc374
System image GUID: 0x946dae03009cc374
Port 1:
State: Active
Physical state: LinkUp
Rate: 200
Base lid: 20
LMC: 0
SM lid: 2
Capability mask: 0xa651e848
Port GUID: 0x946dae03009cc374
Link layer: InfiniBand
CA 'mlx5_5'
CA type: MT4123
Number of ports: 1
Firmware version: 20.38.1002
Hardware version: 0
Node GUID: 0x946dae03009cef04
System image GUID: 0x946dae03009cef04
Port 1:
State: Active
Physical state: LinkUp
Rate: 200
Base lid: 5
LMC: 0
SM lid: 2
Capability mask: 0xa651e848
Port GUID: 0x946dae03009cef04
Link layer: InfiniBand
root@gpumcw2:/home/mcw#
另外一个机器上指定接口去ping没有用ipv6的这个接口的IP
root@gpumcw2:/home/mcw# ifconfig ibs13
ibs13: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 2044
inet 10.xx.xx.8 netmask 255.255.255.0 broadcast 10.110.10.255
inet6 fe80::966d:ae03:9c:c36c prefixlen 64 scopeid 0x20<link>
unspec 00-00-08-0D-FE-80-00-00-00-00-00-00-00-00-00-00 txqueuelen 256 (UNSPEC)
RX packets 2146 bytes 379613 (379.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2151 bytes 278364 (278.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 root@gpumcw2:/home/mcw# root@gpumcw2:/home/mcw# ping -I ibs13 10.xx.xx.8
PING 10.xx.xx.8 (10.xx.xx.8) from 10.110.10.1 ibs13: 56(84) bytes of data.
64 bytes from 10.xx.xx.8: icmp_seq=1 ttl=64 time=0.324 ms
64 bytes from 10.xx.xx.8: icmp_seq=2 ttl=64 time=0.103 ms
^C
--- 10.xx.xx.8 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1032ms
rtt min/avg/max/mdev = 0.103/0.213/0.324/0.110 ms
root@gpumcw2:/home/mcw#
没好之前lo状态
好了之后状态
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