IPv6 Kernel: IPv6 entri di /proc/net/

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Di /proc/net ada beberapa entri yang sifatnya read-only. Entri ini tidak bisa di baca mnggunakan “sysctl”, oleh karenanya gunakan “cat”.

if_inet6

Type: Satu line per address berisi beberapa nilai

Disini semua address IPv6 yang di konfigurasi di simpan dalam format khusus. Contoh disini adalah interface loopback (lo). Artinya dapat dilihat di bawah. Untuk keterangan lebih lanjut bisa membaca di “net/ipv6/addrconf.c” 

# cat /proc/net/if_inet6

00000000000000000000000000000001 01 80 10 80 lo
+------------------------------+ ++ ++ ++ ++ ++
|                                |  |  |  |  |
1                                2  3  4  5  6
  • IPv6 address displayed in 32 hexadecimal chars without colons as separator
  • Netlink device number (interface index) in hexadecimal (see “ip addr” , too)
  • Prefix length in hexadecimal
  • Scope value (see kernel source “ include/net/ipv6.h” and “net/ipv6/addrconf.c” for more)
  • Interface flags (see “include/linux/rtnetlink.h” and “net/ipv6/addrconf.c” for more)
  • Device name

ipv6_route

Type: Satu line per route berisi banyak nilai

Here all configured IPv6 routes are shown in a special format. The example displays for loopback interface only. The meaning is shown below (see “net/ipv6/route.c” for more). 

# cat /proc/net/ipv6_route

00000000000000000000000000000000 00 00000000000000000000000000000000 00
+------------------------------+ ++ +------------------------------+ ++
|                                |  |                                |
1                                2  3                                4

¬ 00000000000000000000000000000000 ffffffff 00000001 00000001 00200200 lo
¬ +------------------------------+ +------+ +------+ +------+ +------+ ++
¬ |                                |        |        |        |        |
¬ 5                                6        7        8        9        10


  • IPv6 destination network displayed in 32 hexadecimal chars without colons as separator
  • IPv6 destination prefix length in hexadecimal
  • IPv6 source network displayed in 32 hexadecimal chars without colons as separator
  • IPv6 source prefix length in hexadecimal
  • IPv6 next hop displayed in 32 hexadecimal chars without colons as separator
  • Metric in hexadecimal
  • Reference counter
  • Use counter
  • Flags
  • Device name

sockstat6

Type: One line per protocol with description and value

Statistics about used IPv6 sockets. Example: 

# cat /proc/net/sockstat6

TCP6: inuse 11
UDP6: inuse 3
UDPLITE6: inuse 0
RAW6: inuse 0
FRAG6: inuse 0 memory 0

tcp6

To be filled.

udp6

To be filled.

igmp6

To be filled.

raw6

To be filled.

ip6_flowlabel

To be filled.

rt6_stats

To be filled.

snmp6

   Type: One line per SNMP description and value

SNMP statistics, can be retrieved via SNMP server and related MIB table by network management software.

ip6_tables_names

Available netfilter6 tables

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