[linux] tcpdump M Out In

[Geert Stappers]

Hoi,

Op een computer (een KVM guest)
met twee netwerkkaarten heb ik een netwerksniffer gestart

  tcpdump -eni any  ip6

Dit komt er o.a. voorbij:

22:45:48.924834  In 48:d2:24:a5:cd:5e ethertype IPv6 (0x86dd),
   length 76: 2001:981:*:*.40656 > 2a02:*:*.443: Flags [R], seq 1514847779, win 0, length 0
22:45:51.508529 Out 52:54:00:81:36:5b ethertype IPv6 (0x86dd),
   length 88: fe80::5054:ff:fe81:365b > fe80::feda:443f:3a9a:c4a2: ICMP6, neighbor solicitation,
   who has fe80::feda:443f:3a9a:c4a2, length 32
22:45:51.509891  In 48:d2:24:a5:cd:5e ethertype IPv6 (0x86dd),
   length 80: fe80::feda:443f:3a9a:c4a2 > fe80::5054:ff:fe81:365b: ICMP6, neighbor advertisement,
   tgt is fe80::feda:443f:3a9a:c4a2, length 24
22:46:54.051798   M 48:d2:24:a5:cd:5e ethertype IPv6 (0x86dd),
   length 88: fe80::feda:443f:3a9a:c4a2 > ff02::1:ff00:0: ICMP6, neighbor solicitation,
   who has ::, length 32
22:47:02.132730 Out 52:54:00:81:36:5b ethertype IPv6 (0x86dd),
   length 104: fe80::5054:ff:fe81:365b > ff02::1: ICMP6, router advertisement, length 48
22:47:43.834951   M 24:65:11:a9:b5:43 ethertype IPv6 (0x86dd),
   length 152: fe80::2665:11ff:fea9:b543 > ff02::1: ICMP6, router advertisement, length 96
22:49:19.814069   M f6:eb:8e:8b:03:4c ethertype IPv6 (0x86dd),
   length 112: fe80::da0e:db52:de9c:bd6e > ff02::1: ICMP6, router advertisement, length 56


De ' In' zijn "inkomende packeten", 'Out' "uitgaand".
Wat zou '  M'  zijn?


Groeten
Geert Stappers
-- 
Leven en laten leven