IPV6 Tunneling under linux

['chris']

hi

how can I check whether IPV6 Tunneling is active ?
I have linux SUSE 8.2 professional.

kind regards
chris

[Ragu_3 · Accepted solution]

Using an IPv6 aware netstat from the net-tools package, do a netstat -nlp to verify. Check whether the networking tools on SuSE is IPv6 ready!

['chris']

hi

but howto check whether the networking tools on SuSE is IPv6 ready ?

# netstat -nlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:32768 0.0.0.0:* LISTEN 1334/kdm
tcp 0 0 0.0.0.0:515 0.0.0.0:* LISTEN 1319/xinetd
tcp 0 0 0.0.0.0:37 0.0.0.0:* LISTEN 1319/xinetd
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 926/mysqld
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 717/portmap
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1376/httpd
tcp 0 0 0.0.0.0:6000 0.0.0.0:* LISTEN 1356/X
tcp 0 0 0.0.0.0:5810 0.0.0.0:* LISTEN 1319/xinetd
tcp 0 0 0.0.0.0:10002 0.0.0.0:* LISTEN 794/perl
tcp 0 0 0.0.0.0:5811 0.0.0.0:* LISTEN 1319/xinetd
tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 1319/xinetd
tcp 0 0 10.41.1.10:53 0.0.0.0:* LISTEN 946/named
tcp 0 0 127.0.0.1:53 0.0.0.0:* LISTEN 946/named
tcp 0 0 0.0.0.0:5910 0.0.0.0:* LISTEN 1319/xinetd
tcp 0 0 0.0.0.0:5911 0.0.0.0:* LISTEN 1319/xinetd
tcp 0 0 0.0.0.0:631 0.0.0.0:* LISTEN 1069/cupsd
tcp 0 0 0.0.0.0:3128 0.0.0.0:* LISTEN 1509/(squid)
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1300/master
tcp 0 0 127.0.0.1:953 0.0.0.0:* LISTEN 946/named
tcp 0 0 :::22 :::* LISTEN 1070/sshd
tcp 0 0 ::1:953 :::* LISTEN 946/named
udp 0 0 0.0.0.0:32768 0.0.0.0:* 946/named
udp 0 0 0.0.0.0:32770 0.0.0.0:* 1509/(squid)
udp 0 0 0.0.0.0:10000 0.0.0.0:* 794/perl
udp 0 0 0.0.0.0:4500 0.0.0.0:* 1533/cvpnd
udp 0 0 0.0.0.0:161 0.0.0.0:* 731/snmpd
udp 0 0 0.0.0.0:37 0.0.0.0:* 1319/xinetd
udp 0 0 0.0.0.0:177 0.0.0.0:* 1334/kdm
udp 0 0 127.0.0.1:29747 0.0.0.0:* 1533/cvpnd
udp 260 0 127.0.0.1:29748 0.0.0.0:* 1519/vpnclient
udp 0 0 127.0.0.1:29749 0.0.0.0:* 1533/cvpnd
udp 0 0 10.41.1.10:53 0.0.0.0:* 946/named
udp 0 0 127.0.0.1:53 0.0.0.0:* 946/named
udp 0 0 127.0.0.1:29751 0.0.0.0:* 1533/cvpnd
udp 0 0 127.0.0.1:29753 0.0.0.0:* 1533/cvpnd
udp 0 0 0.0.0.0:3130 0.0.0.0:* 1509/(squid)
udp 0 0 127.0.0.1:29755 0.0.0.0:* 1533/cvpnd
udp 0 0 127.0.0.1:29756 0.0.0.0:* 1533/cvpnd
udp 0 0 0.0.0.0:3401 0.0.0.0:* 1509/(squid)
udp 0 0 0.0.0.0:111 0.0.0.0:* 717/portmap
udp 0 0 0.0.0.0:500 0.0.0.0:* 1533/cvpnd
udp 0 0 0.0.0.0:631 0.0.0.0:* 1069/cupsd
udp 0 0 10.41.1.10:123 0.0.0.0:* 7275/ntpd
udp 0 0 127.0.0.1:123 0.0.0.0:* 7275/ntpd
udp 0 0 0.0.0.0:123 0.0.0.0:* 7275/ntpd
udp 0 0 :::32769 :::* 946/named
raw 0 0 0.0.0.0:1 0.0.0.0:* 7 7369/ping
raw 0 0 0.0.0.0:1 0.0.0.0:* 7 7351/ping
raw 0 0 0.0.0.0:1 0.0.0.0:* 7 7353/ping
raw 0 0 0.0.0.0:1 0.0.0.0:* 7 7339/ping
Active UNIX domain sockets (only servers)
Proto RefCnt Flags Type State I-Node PID/Program name Path
unix 2 [ ACC ] STREAM LISTENING 3971 1300/master private/rewrite
unix 2 [ ACC ] STREAM LISTENING 3975 1300/master private/bounce
unix 2 [ ACC ] STREAM LISTENING 3964 1300/master public/cleanup
unix 2 [ ACC ] STREAM LISTENING 3979 1300/master private/defer
unix 2 [ ACC ] STREAM LISTENING 3987 1300/master private/proxymap
unix 2 [ ACC ] STREAM LISTENING 3983 1300/master public/flush
unix 2 [ ACC ] STREAM LISTENING 2185 926/mysqld /var/lib/mysql/mysql.sock
unix 2 [ ACC ] STREAM LISTENING 3999 1300/master public/showq
unix 2 [ ACC ] STREAM LISTENING 3991 1300/master private/smtp
unix 2 [ ACC ] STREAM LISTENING 1249 703/resmgrd /var/run/.resmgr_socket
unix 2 [ ACC ] STREAM LISTENING 3995 1300/master private/relay
unix 2 [ ACC ] STREAM LISTENING 4003 1300/master private/error
unix 2 [ ACC ] STREAM LISTENING 4007 1300/master private/local
unix 2 [ ACC ] STREAM LISTENING 4011 1300/master private/virtual
unix 2 [ ACC ] STREAM LISTENING 4015 1300/master private/lmtp
unix 2 [ ACC ] STREAM LISTENING 4019 1300/master private/maildrop
unix 2 [ ACC ] STREAM LISTENING 4023 1300/master private/cyrus
unix 2 [ ACC ] STREAM LISTENING 4027 1300/master private/uucp
unix 2 [ ACC ] STREAM LISTENING 4031 1300/master private/ifmail
unix 2 [ ACC ] STREAM LISTENING 7002 1431/nscd /var/run/.nscd_socket
unix 2 [ ACC ] STREAM LISTENING 4035 1300/master private/bsmtp
unix 2 [ ACC ] STREAM LISTENING 4039 1300/master private/vscan
unix 2 [ ACC ] STREAM LISTENING 4043 1300/master private/procmail
unix 2 [ ACC ] STREAM LISTENING 4932 1356/X /tmp/.X11-unix/X0

[Ragu_3]

What does 'route -A inet6' say? How are you tunneling? Any tunnel broking service? Please do read the "Linux IPV6 HOWTO" from the link http://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/. Hth...

[Ragu_3]

chris>> but howto check whether the
chris>> networking tools on SuSE is
chris>> IPv6 ready ?

By doing a 'netstat -?'. Towards the end of the output, you can read whether it supports inet6.

[Lee Hundley]

tcp 0 0 :::22 :::* LISTEN 1070/sshd
tcp 0 0 ::1:953 :::* LISTEN 946/named

Those 2 lines indicate that sshd is listening on all IPv6 interfaces, and named is listening on the IPv6 loopback address. It would appear that IPv6 is enabled and ready on this system. If you don't have native IPv6 connectivity from your ISP, I'd recommend useing Hurricane Electric's TunnelBroker service.

http://tunnelbroker.net

Its simple to set up, fast, and they provide examples to tunnel in for most mainstream operating systems.