On Thu, Jun 20, 2002 at 03:03:41PM +1000, Julie Xu wrote:
> Greetings,
> I have installed redhat 7.3 into my laptop (dual system WinXP and Redhat).
> At the time to install redhat,
> I had not get any question about ipv6. After installation, the ipv6 did not
> enabled, so, I addd NETWORKING_IPV6="yes" into /etc/sysconfig/network
> IPV6INIT=yes into /etc/sysconfig/network-script/ifcfg-eth0.
> Now, I can ping ::1. I can not ping the ipv6 laptop Eth0 address.
> However, I have another machine in same LAN. From it, I can ping my laptop
> by ipv6 address, but not
> from laptop to it.
> Other Machine can ping the laptop:
> ==================================
> Other-machine$ping -s fe80::200:39ff:fee2:81ad
> PING fe80::200:39ff:fee2:1234: 56 data bytes
> 64 bytes from fe80::200:39ff:fee2:1234: icmp_seq=0. time=0. ms
> 64 bytes from fe80::200:39ff:fee2:1234: icmp_seq=1. time=0. ms
> 64 bytes from fe80::200:39ff:fee2:1234: icmp_seq=2. time=0. ms
> My laptop can not ping other machine
> ====================================
> my-laptop#ping6 fe80::203:baff:fe0e:234e
> connect: Invalid argument
> My laptop can not ping its own ipv6 address
> ===========================================
> my-laptop#ifconfig -a
> eth0 ..........
> inet6 addr: fe80::200:39ff:fee2:1234/10 Scope:Link
> my-laptop#ping6 fe80::200:39ff:fee2:1234
> connect: Invalid argument
> So, what is my laptop problem? Is some package I have not installed?
There seems to be a problem trying to ping the link-local
addresses (fe80::)
For instances... One of my systems:
[mhw@plover mhw]$ /sbin/ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:A0:24:DA:D3:1D
:
inet6 addr: fec0::8200:2a0:24ff:feda:d31d/64 Scope:Site
inet6 addr: fe80::2a0:24ff:feda:d31d/10 Scope:Link
inet6 addr: 3ffe:b80:c84:8200:2a0:24ff:feda:d31d/64 Scope:Global
[mhw@plover mhw]$ ping6 fec0::8200:2a0:24ff:feda:d31d
PING fec0::8200:2a0:24ff:feda:d31d(fec0::8200:2a0:24ff:feda:d31d) from ::1 : 56 data
bytes
64 bytes from fec0::8200:2a0:24ff:feda:d31d: icmp_seq=0 hops=64 time=129 usec
64 bytes from fec0::8200:2a0:24ff:feda:d31d: icmp_seq=1 hops=64 time=61 usec
--- fec0::8200:2a0:24ff:feda:d31d ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max/mdev = 0.061/0.095/0.129/0.034 ms
[mhw@plover mhw]$ ping6 fe80::2a0:24ff:feda:d31d
connect: Invalid argument
[mhw@plover mhw]$ ping6 3ffe:b80:c84:8200:2a0:24ff:feda:d31d
PING 3ffe:b80:c84:8200:2a0:24ff:feda:d31d(3ffe:b80:c84:8200:2a0:24ff:feda:d31d) from
::1 : 56 data bytes
64 bytes from 3ffe:b80:c84:8200:2a0:24ff:feda:d31d: icmp_seq=0 hops=64 time=78 usec
64 bytes from 3ffe:b80:c84:8200:2a0:24ff:feda:d31d: icmp_seq=1 hops=64 time=50 usec
--- 3ffe:b80:c84:8200:2a0:24ff:feda:d31d ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max/mdev = 0.050/0.064/0.078/0.014 ms
So I can use ping6 to ping any site-local or global address,
but I can not ping link-local addresses. But a route for the link-local
prefix does exist...
[mhw@plover mhw]$ /sbin/ip -6 route | grep fe80
fe80::/10 dev eth0 proto kernel metric 256 mtu 1500 advmss 1440
Seems like something doesn't like the link-local addresses.
I never use link-local for anything and autoconf my site-local and global
prefixes.
Try configuring a site-local prefix (fec0::) and trying it again.
> Any comments will be appreciated
> Thanks in advance
> Julie Xu
> Unix/Network Administrator
> Information Technology Directorate
> University of Westen Sydney, Campbelltown
> Campbelltown NSW 2560
> Phone: 61 02 4620-3098
> Mobile: 0416 179 868
> Email: [EMAIL PROTECTED]
Mike
--
Michael H. Warfield | (770) 985-6132 | [EMAIL PROTECTED]
/\/\|=mhw=|\/\/ | (678) 463-0932 | http://www.wittsend.com/mhw/
NIC whois: MHW9 | An optimist believes we live in the best of all
PGP Key: 0xDF1DD471 | possible worlds. A pessimist is sure of it!
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