同じハイパーバイザー上にある 2 つの VM の構成を作成しようとしています。各 VM の XML ファイルを編集して、各 VM にハイパーバイザーから virtIO インターフェイスを接続しました。VM を作成し、接続後に次のインターフェイスを取得しました。
ens7: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 11.198.133.5 netmask 255.0.0.0 broadcast 11.255.255.255
ether 00:00:11:22:33:40 txqueuelen 1000 (Ethernet)
RX packets 147 bytes 13980 (13.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 240 bytes 17952 (17.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens7: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 11.198.133.6 netmask 255.0.0.0 broadcast 11.255.255.255
ether 00:00:11:22:33:41 txqueuelen 1000 (Ethernet)
RX packets 57 bytes 8360 (8.1 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 261 bytes 18666 (18.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
各VMの各インターフェースで、あるVMから別のVMにIPでpingを実行中に、「宛先ホストに到達できません」というメッセージが表示されますが、1つのVMでpingを実行してtcpdump -nei ens7 一方、私はメッセージを受信します:
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ens7, link-type EN10MB (Ethernet), capture size 262144 bytes
12:24:49.749562 00:00:11:22:33:41 > Broadcast, ethertype ARP (0x0806), length 60: Request who-has 11.198.133.5 tell 11.198.133.6, length 46
12:24:49.749576 00:00:11:22:33:40 > 00:00:11:22:33:41, ethertype ARP (0x0806), length 42: Reply 11.198.133.5 is-at 00:00:11:22:33:40, length 28
12:24:50.773503 00:00:11:22:33:41 > Broadcast, ethertype ARP (0x0806), length 60: Request who-has 11.198.133.5 tell 11.198.133.6, length 46
12:24:50.773514 00:00:11:22:33:40 > 00:00:11:22:33:41, ethertype ARP (0x0806), length 42: Reply 11.198.133.5 is-at 00:00:11:22:33:40, length 28
12:24:51.797660 00:00:11:22:33:41 > Broadcast, ethertype ARP (0x0806), length 60: Request who-has 11.198.133.5 tell 11.198.133.6, length 46
12:24:51.797671 00:00:11:22:33:40 > 00:00:11:22:33:41, ethertype ARP (0x0806), length 42: Reply 11.198.133.5 is-at 00:00:11:22:33:40, length 28
12:24:52.821495 00:00:11:22:33:41 > Broadcast, ethertype ARP (0x0806), length 60: Request who-has 11.198.133.5 tell 11.198.133.6, length 46
12:24:52.821505 00:00:11:22:33:40 > 00:00:11:22:33:41, ethertype ARP (0x0806), length 42: Reply 11.198.133.5 is-at 00:00:11:22:33:40, length 28
12:24:53.845496 00:00:11:22:33:41 > Broadcast, ethertype ARP (0x0806), length 60: Request who-has 11.198.133.5 tell 11.198.133.6, length 46
12:24:53.845507 00:00:11:22:33:40 > 00:00:11:22:33:41, ethertype ARP (0x0806), length 42: Reply 11.198.133.5 is-at 00:00:11:22:33:40, length 28
12:24:54.869559 00:00:11:22:33:41 > Broadcast, ethertype ARP (0x0806), length 60: Request who-has 11.198.133.5 tell 11.198.133.6, length 46
12:24:54.869570 00:00:11:22:33:40 > 00:00:11:22:33:41, ethertype ARP (0x0806), length 42: Reply 11.198.133.5 is-at 00:00:11:22:33:40, length 28
12:24:55.893414 00:00:11:22:33:41 > Broadcast, ethertype ARP (0x0806), length 60: Request who-has 11.198.133.5 tell 11.198.133.6, length 46
12:24:55.893424 00:00:11:22:33:40 > 00:00:11:22:33:41, ethertype ARP (0x0806), length 42: Reply 11.198.133.5 is-at 00:00:11:22:33:40, length 28
12:24:56.917488 00:00:11:22:33:41 > Broadcast, ethertype ARP (0x0806), length 60: Request who-has 11.198.133.5 tell 11.198.133.6, length 46
12:24:56.917499 00:00:11:22:33:40 > 00:00:11:22:33:41, ethertype ARP (0x0806), length 42: Reply 11.198.133.5 is-at 00:00:11:22:33:40, length 28
12:24:57.941588 00:00:11:22:33:41 > Broadcast, ethertype ARP (0x0806), length 60: Request who-has 11.198.133.5 tell 11.198.133.6, length 46
12:24:57.941600 00:00:11:22:33:40 > 00:00:11:22:33:41, ethertype ARP (0x0806), length 42: Reply 11.198.133.5 is-at 00:00:11:22:33:40, length 28
tcpdump がパケットを認識しているのに、なぜ ping コマンドが機能しないのでしょうか? XML を編集して、巨大ページと ovs がハイパーバイザー上で正しく割り当てられるようにしました。