IPv6 Kernel: IPv6 entri di /proc/net/
11.4. IPv6-related entries in /proc/net/
In /proc/net there are several read-only entries available. You cannot retrieve information using “sysctl” here, so use e.g. “cat”. 11.4.1. if_inet6
Type: One line per addresss containing multiple values
Here all configured IPv6 addresses are shown in a special format. The example displays for loopback interface only. The meaning is shown below (see “net/ipv6/addrconf.c” for more).
- 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
11.4.2. ipv6_route
Type: One line per route containing multiple values
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
11.4.3. sockstat6
Type: One line per protocol with description and value
Statistics about used IPv6 sockets. Example:
- cat /proc/net/sockstat6
TCP6: inuse 7 UDP6: inuse 2 RAW6: inuse 1 FRAG6: inuse 0 memory 0
11.4.4. tcp6
To be filled. 11.4.5. udp6
To be filled. 11.4.6. igmp6
To be filled. 11.4.7. raw6
To be filled. 11.4.8. ip6_flowlabel
To be filled. 11.4.9. rt6_stats
To be filled. 11.4.10. 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. 11.4.11. ip6_tables_names
Available netfilter6 tables