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IPv6 ping åé¡ (ICMPv6 ãšã³ãŒèŠæ±/ãšã³ãŒå¿ç) ã®ãã©ãã«ã·ã¥ãŒãã£ã³ã°ã«é¢ãããã³ããšãã¯ããã¯ã«é¢ããäžé£ã®ããã°æçš¿
ç§ã¯ Linux (ç¹ã« Fedora 31) ã䜿çšããŠããŸãããä»ã®ãªãã¬ãŒãã£ã³ã° ã·ã¹ãã ã® ping ã³ãã³ãæ§æããã䌌ãŠããã¯ãã§ããããšã«æ³šæããŠãã ããã
ãã£ãã«äžã®ãã¹ãŠã® IPv6 ããŒãã« ping ãå®è¡ãã
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IPv6 ã¯ãããããçš®é¡ã® 6 察å€éä¿¡ã«ãã«ããã£ã¹ã ã¢ãã¬ã¹ã䜿çšããŸãã ãããŒããã£ã¹ã (ãŸãã¯ãããŒããã£ã¹ã) IPv6 ã¢ãã¬ã¹ã¯ãããŸããã ããã¯ãIPv4 ã IPv255.255.255.255 ãšåºå¥ããŸããIPv1122 ã«ã¯ããéå®ãããŒããã£ã¹ããã¢ãã¬ã¹ XNUMX [RFCXNUMX] ãªã©ãããã€ãã®çš®é¡ã®ãããŒããã£ã¹ã ã¢ãã¬ã¹ããããŸãã
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šããŒã ãã«ããã£ã¹ã IPv6 ã¢ãã¬ã¹: ff02::1. ff
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šããŒãã®ãã«ããã£ã¹ã ã°ã«ãŒããæå®ããŸãã
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ææ§ã§ããããšã«æ³šæããŠãã ããã ã«ãŒã¿ãŒããã«ãããŒã ãã¹ããªã©ãè€æ°ã®ã€ã³ã¿ãŒãã§ã€ã¹ãæ〠IPv6 ãã¹ãã§ã¯ãã¢ãã¬ã¹ ff02::1
ICMPv6 ãšã³ãŒèŠæ±ã®éä¿¡å
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ãããã§ãããã®ã¯äœããããŸããã ff02::1
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IPv6 ã®å Žåã䜿çšããã€ã³ã¿ãŒãã§ã€ã¹ã
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šããŒãã®ãã«ããã£ã¹ãã¢ãã¬ã¹ã¯- ff02::1
- ICMPv6 ãšã³ãŒèŠæ±ããã³ãšã³ãŒå¿çãã±ãããéåä¿¡ããã€ã³ã¿ãŒãã§ã€ã¹ã«é¢ããæ
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ãŠãŒãã£ãªãã£çš ping
ãªãã·ã§ã³ã§æäŸããŸã -I
.
[mark@opy ~]$ ping -w 1 -I enp3s2 ff02::1
ping: Warning: source address might be selected on device other than: enp3s2
PING ff02::1(ff02::1) from :: enp3s2: 56 data bytes
64 bytes from fe80::1d36:1fff:fefd:82be%enp3s2: icmp_seq=1 ttl=64 time=0.438 ms
64 bytes from fe80::f31c:ccff:fe26:a6d9%enp3s2: icmp_seq=1 ttl=64 time=0.589 ms (DUP!)
64 bytes from fe80::7e31:f5ff:fe1b:9fdb%enp3s2: icmp_seq=1 ttl=64 time=5.15 ms (DUP!)
64 bytes from fe80::f7f8:15ff:fe6f:be6e%enp3s2: icmp_seq=1 ttl=64 time=58.0 ms (DUP!)
64 bytes from fe80::877d:4ff:fe1a:b881%enp3s2: icmp_seq=1 ttl=64 time=62.3 ms (DUP!)
64 bytes from fe80::877d:4ff:fe1a:ad79%enp3s2: icmp_seq=1 ttl=64 time=62.8 ms (DUP!)
--- ff02::1 ping statistics ---
1 packets transmitted, 1 received, +5 duplicates, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.438/31.544/62.786/29.566 ms
[mark@opy ~]$
ãã®å
šããŒã ãã«ããã£ã¹ã ping ã䜿çšããŠã6 ã€ã® IPv6 ããŒãããå¿çãåä¿¡ããŸããã å¿çã¯ããã¬ãã£ãã¯ã¹ã§å§ãŸããªã³ã¯ããŒã«ã« IPv6 ããŒã ã¢ãã¬ã¹ããéä¿¡ãããŸããã fe80::/10
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ãã® ping
ã¯ãäžæãããŸã§ ICMPv6 ãšã³ãŒèŠæ±ãç¡æéã«éä¿¡ãç¶ããããšã¯ãããŸãããéåžžãéä¿¡ãããã±ããæ°ã¯ -c ãªãã·ã§ã³ã§æå®ããŸãã ãã ããããã«ããããã«ããã£ã¹ã ICMPv6 ãšã³ãŒèŠæ±ãéä¿¡ãããšãã«ãping ãè€æ°ã® ICMPv6 ãšã³ãŒå¿çãåãå
¥ããŠè¡šç€ºããããšãã§ããªããªããŸãã 代ããã«ã-w ãªãã·ã§ã³ã䜿çšããŠãICMPv1 ãšã³ãŒèŠæ±ãŸãã¯ãšã³ãŒå¿çãéåä¿¡ãããåæ°ã«é¢ä¿ãªããping ã 6 ç§åŸã«å®äºããããã«æå®ããŸããã
ãã XNUMX ã€æ³šæãã¹ãç¹ã¯ (DUP!
) 6 çªç®ä»¥éã®åçã«åºåãããŸãã ãããã®ãã±ããã¯ãæåã«éä¿¡ãããåã
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ã€ã³ã¿ãŒãã§ã€ã¹ã®å®çŸ© - ãŸãŒã³ ID
ã€ã³ã¿ãŒãã§ã€ã¹ãå ¬éããŠäœ¿çšãããã 6 ã€ã®æ¹æ³ã¯ãIPvXNUMX ã¢ãã¬ã¹ ãã©ã¡ãŒã¿ãŒã®äžéšãšããŠäœ¿çšããããšã§ãã
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ããšãã°ã次ã®ããã«ãªããŸãã
64 bytes from fe80::1d36:1fff:fefd:82be%enp3s2: icmp_seq=1 ttl=64 time=0.438 ms
ãã®ã€ã³ã¿ãŒãã§ãŒã¹ãæå®ããæ¹æ³ã¯ã[RFC4007]ãIPv6 Defined Address Architectureãã§æ£åŒã«èª¬æãããŠããŸãã ãããã¯éåžžããªãã¬ãŒãã£ã³ã° ã·ã¹ãã ã€ã³ã¿ãŒãã§ã€ã¹ãšåŒã°ããŸãããå®éã«ã¯ãããäžè¬çãªãã®ãã€ãŸãããŸãŒã³ããŸãã¯ãã¹ã³ãŒãããå®çŸ©ããŸãã
ããäžè¬çãªãŸãŒã³ãŸãã¯ã¹ã³ãŒã ãŸãŒã³ãæã€çç±ã¯ã[RFC4007] ã§è¿°ã¹ãããŠããããã«ãIPv6 ããŒããåããã£ãã«ã«æ¥ç¶ãããè€æ°ã®ç°ãªã IPv6 ã€ã³ã¿ãŒãã§ã€ã¹ãæã€ããšãã§ããããã§ãã ãããã®ã€ã³ã¿ãŒãã§ã€ã¹ã¯åããŸãŒã³ã®ã¡ã³ããŒã§ãã
ãªãã¬ãŒãã£ã³ã° ã·ã¹ãã ã®ãŸãŒã³å ã§è€æ°ã®ã€ã³ã¿ãŒãã§ã€ã¹ãã°ã«ãŒãåã§ããå¿ èŠããããŸãã çŸæç¹ã§ã¯ãããã Linux ã§å¯èœãã©ããããŸããã®æ¹æ³ã¯ããããŸããã
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ãã³ãã³ãã©ã€ã³ãªãã·ã§ã³ãåé€ã§ããŸã -I ping
.
[mark@opy ~]$ ping -w 1 ff02::1%enp3s2
PING ff02::1%enp3s2(ff02::1%enp3s2) 56 data bytes
64 bytes from fe80::2392:6213:a15b:66ff%enp3s2: icmp_seq=1 ttl=64 time=0.106 ms
64 bytes from fe80::1d36:1fff:fefd:82be%enp3s2: icmp_seq=1 ttl=64 time=0.453 ms (DUP!)
64 bytes from fe80::f31c:ccff:fe26:a6d9%enp3s2: icmp_seq=1 ttl=64 time=0.606 ms (DUP!)
64 bytes from fe80::7e31:f5ff:fe1b:9fdb%enp3s2: icmp_seq=1 ttl=64 time=6.23 ms (DUP!)
64 bytes from fe80::f7f8:15ff:fe6f:be6e%enp3s2: icmp_seq=1 ttl=64 time=157 ms (DUP!)
64 bytes from fe80::877d:4ff:fe1a:ad79%enp3s2: icmp_seq=1 ttl=64 time=159 ms (DUP!)
64 bytes from fe80::877d:4ff:fe1a:b881%enp3s2: icmp_seq=1 ttl=64 time=161 ms (DUP!)
64 bytes from fe80::23d:e8ff:feec:958c%enp3s2: icmp_seq=1 ttl=64 time=179 ms (DUP!)
--- ff02::1%enp3s2 ping statistics ---
1 packets transmitted, 1 received, +7 duplicates, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.106/82.858/179.216/81.281 ms
[mark@opy ~]$
ãªã³ã¯ããŒã«ã«ã¢ãã¬ã¹å¿ç
ãã®å šããŒãã®ãã«ããã£ã¹ã ping ãããåèš 6 ã€ã®äžæã®å¿çãåãåããŸããã
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64 bytes from fe80::2392:6213:a15b:66ff%enp3s2: icmp_seq=1 ttl=64 time=0.106 ms
ãŠããã£ã¹ã ãªã³ã¯ããŒã«ã« IPv6 ã¢ãã¬ã¹ã¯ããã¹ãŠã® IPv6 察å¿ã€ã³ã¿ãŒãã§ã€ã¹ [RFC4291]ããIP ããŒãžã§ã³ 6 ã¢ãã¬ãã·ã³ã° ã¢ãŒããã¯ãã£ãã§å¿ èŠã§ãã ãã®çç±ã¯ãIPv6 ããŒãã¯åžžã«èªåçã«ãŠããã£ã¹ã IPv6 ã¢ãã¬ã¹ãæã¡ãå°ãªããšãçŽæ¥æ¥ç¶ããããªã³ã¯äžã®ä»ã®ããŒããšéä¿¡ããããã«äœ¿çšã§ããããã§ãã ããã«ã¯ããªã³ã¯ããŒã«ã« ãã¹ã ã¢ãã¬ã¹ãä»ããä»ã®ãã¹ãäžã®ã¢ããªã±ãŒã·ã§ã³ãšã®éä¿¡ãå«ãŸããŸãã
ããã«ãããIPv6 è¿é£æ¢çŽ¢ã OSPFv3 ãªã©ã®ãããã³ã«ã®èšèšãšå®è£ ãç°¡çŽ åãããŸãã ãŸãããã¹ãäžã®ãšã³ããŠãŒã¶ãŒ ã¢ããªã±ãŒã·ã§ã³ã¯ããã£ãã«äžã«ä»ã®ãµããŒããã IPv6 ã€ã³ãã©ã¹ãã©ã¯ãã£ãå¿ èŠãšããã«ãã£ãã«çµç±ã§éä¿¡ã§ããããã«ãªããŸãã æ¥ç¶ããã IPv6 ãã¹ãéã®çŽæ¥éä¿¡ã«ã¯ãæ¥ç¶äžã« IPv6 ã«ãŒã¿ãŒã DHCPv6 ãµãŒããŒã¯å¿ èŠãããŸããã
ãªã³ã¯ããŒã«ã« ã¢ãã¬ã¹ã¯ 10 ãããã®ãã¬ãã£ãã¯ã¹ã§å§ãŸããŸã fe80
ããã®åŸã« 54 åã®ãŒã ãããããã㊠64 ãããã®ã€ã³ã¿ãŒãã§ã€ã¹èå¥å (IID) ãç¶ããŸãã äžèšã®æåã®åçã§ã¯ 2392:6213:a15b:66ff
㯠64 ããã IID ã§ãã
ã«ãŒããã«ããã£ã¹ã
ããã©ã«ãã§ã¯ããã«ããã£ã¹ã ãã±ããã¯ããããéä¿¡ããããŒãã«å éšçã«è¿ãããŸãã ããã¯ãIPv6 ãš IPv4 ã®äž¡æ¹ã®ã¢ãã¬ã¹æå®ã§çºçããŸãã
ãã®ããã©ã«ãåäœã®çç±ã¯ããã«ããã£ã¹ã ãã±ãããéä¿¡ããããšãã«ããããã¯ãŒã¯äžã®ã©ããã ãã§ãªããéä¿¡ãã¹ãèªäœã§ãå®è¡ãããŠãããªã¹ãã³ã° ããŒã«ã« ãã«ããã£ã¹ã ã¢ããªã±ãŒã·ã§ã³ãååšããå¯èœæ§ãããããã§ãã ãã®ããŒã«ã« ã¢ããªã±ãŒã·ã§ã³ã¯ãã«ããã£ã¹ã ãã±ãããåä¿¡ããå¿ èŠããããŸãã
ãã®ãã«ããã£ã¹ã ããŒã«ã« ã«ãŒã㯠ping åºåã§ç¢ºèªã§ããŸãã
[mark@opy ~]$ ping -w 1 ff02::1%enp3s2
PING ff02::1%enp3s2(ff02::1%enp3s2) 56 data bytes
64 bytes from fe80::2392:6213:a15b:66ff%enp3s2: icmp_seq=1 ttl=64 time=0.106 ms
64 bytes from fe80::1d36:1fff:fefd:82be%enp3s2: icmp_seq=1 ttl=64 time=0.453 ms (DUP!)
...
æåã®æéã®å¿ç (0,106 ããªç§ãšæ¯èŒã㊠0,453 ããªç§) ã¯ãã€ã³ã¿ãŒãã§ã€ã¹èªäœã«èšå®ããããªã³ã¯ããŒã«ã« ã¢ãã¬ã¹ããã®ãã®ã§ãã enp3s2
.
[mark@opy ~]$ ip addr show dev enp3s2 | grep fe80
inet6 fe80::2392:6213:a15b:66ff/64 scope link noprefixroute
[mark@opy ~]$
ãŠãŒãã£ãªã㣠ping
ãã©ã¡ãŒã¿ã䜿çšããŠããŒã«ã« ãã«ããã£ã¹ã ãã£ãŒãããã¯ãæå¶ããæ¹æ³ãæäŸããŸã -L
ã ãã®ãã©ã°ã䜿çšããŠå
šããŒãã®ãã«ããã£ã¹ã ping ãéä¿¡ãããšãå¿çã¯ãªã¢ãŒã ããŒãã«éå®ãããŸãã éä¿¡ã€ã³ã¿ãŒãã§ã€ã¹ã®ãªã³ã¯ããŒã«ã« ã¢ãã¬ã¹ããå¿çãåãåããŸããã
[mark@opy ~]$ ping -L -w 1 ff02::1%enp3s2
PING ff02::1%enp3s2(ff02::1%enp3s2) 56 data bytes
64 bytes from fe80::1d36:1fff:fefd:82be%enp3s2: icmp_seq=1 ttl=64 time=0.383 ms
64 bytes from fe80::f31c:ccff:fe26:a6d9%enp3s2: icmp_seq=1 ttl=64 time=0.467 ms (DUP!)
...
Ping ãªã³ã¯ããŒã«ã« ã¢ãã¬ã¹
ãæ³åã®ãšããããŠããã£ã¹ã ãªã³ã¯ããŒã«ã« ã¢ãã¬ã¹èªäœããã¢ãã¬ã¹ã«å°éããããã«ã©ã®ã€ã³ã¿ãŒãã§ã€ã¹ã䜿çšãããã瀺ãã®ã«ååãªæ
å ±ãæäŸããŸããã å
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ãªã³ã¯ããŒã«ã« ã¢ãã¬ã¹ã« ping ãå®è¡ããå Žåã¯ããŸãŒã³ ID ãšã¢ãã¬ã¹ãçµã¿åãããŸãã
ä»å䜿ããã®ã¯ -c
éåä¿¡ããããã±ãããšå¿çã®æ°ãå¶éãã ping
, ãŠããã£ã¹ã ping ãå®è¡ããŠããããã§ãã
[mark@opy ~]$ ping -c 1 fe80::f31c:ccff:fe26:a6d9%enp3s2
PING fe80::f31c:ccff:fe26:a6d9%enp3s2(fe80::fad1:11ff:feb7:3704%enp3s2) 56 data bytes
64 bytes from fe80::f31c:ccff:fe26:a6d9%enp3s2: icmp_seq=1 ttl=64 time=0.395 ms
--- fe80::f31c:ccff:fe26:a6d9%enp3s2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.395/0.395/0.395/0.000 ms
[mark@opy ~]$
ä»ã® (ãã¹ãŠã®) IPv6 ã¢ãã¬ã¹ã« ping ãå®è¡ããŸãã?
ãã®èšäºã§ã¯ãå
šããŒã ãã«ããã£ã¹ã IPv6 ã¢ãã¬ã¹ã䜿çšããŠãã£ãã«äžã®ãã¹ãŠã® IPv6 ããŒãã« ping ãå®è¡ããæ¹æ³ã«ã€ããŠèª¬æããŸããã ff02::1
ã ãŸããã¢ãã¬ã¹èªäœã¯ãã®æ
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