Hi,
I ran into a "got query but cannot answer" problem.
How to retrieve the kernel's IPv6 routing cache table with a userland
tool? I would expect data like MTU of PMTUD, next hop, usage and so on.
IPv6:
# ip -6 route show table cache
ff02::1 via ff02::1 dev eth0 metric 0
cache mtu 1280 advmss 1220 metric 10 4294967295
ff02::1:ffea:7781 via ff02::1:ffea:7781 dev eth0 metric 0
cache mtu 1280 advmss 1220 metric 10 4294967295
That's all? I would expect similar to IPv4 like:
# ip -4 route show table cache
local 127.0.0.1 from 127.0.0.1 dev lo
cache <local> mtu 16436 advmss 16396 metric 10 64
broadcast 192.0.2.255 from 192.0.2.1 dev lo src 192.0.2.50
cache <local,brd,src-direct> iif eth0
local 127.0.0.1 dev lo src 127.0.0.1
cache <local> mtu 16436 advmss 16396 metric 10 64
192.0.2.1 dev eth0 src 192.0.2.50
cache mtu 1500 advmss 1460 metric 10 64
local 192.0.2.50 from 192.0.2.6 dev lo src 192.0.2.50
cache <local,src-direct> iif eth0
192.0.2.6 from 192.0.2.50 tos 0x10 dev eth0
cache mtu 1500 advmss 1460 metric 10 64
local 192.0.2.50 from 192.0.2.1 dev lo src 192.0.2.50
cache <local,src-direct> iif eth0
192.0.2.6 from 192.0.2.50 dev eth0
cache mtu 1500 advmss 1460 metric 10 64
broadcast 192.0.2.255 from 192.0.2.2 dev lo src 192.0.2.50
cache <local,brd,src-direct> iif eth0
192.0.2.1 from 192.0.2.50 dev eth0
cache mtu 1500 advmss 1460 metric 10 64
Also:
# route -A inet -C -n
Kernel IP routing cache
Source Destination Gateway Flags Metric Ref Use
Iface
192.0.2.50 192.0.2.6 192.0.2.6 0 3 1 eth0
192.0.2.6 192.0.2.50 192.0.2.50 il 0 0 119 lo
192.0.2.50 192.0.2.6 192.0.2.6 0 0 1 eth0
192.0.2.1 192.0.2.50 192.0.2.50 il 0 0 7 lo
192.0.2.50 192.0.2.1 192.0.2.1 0 0 7 eth0
127.0.0.1 127.0.0.1 127.0.0.1 l 0 0 0 lo
127.0.0.1 127.0.0.1 127.0.0.1 l 0 0 0 lo
192.0.2.50 192.0.2.1 192.0.2.1 0 0 7 eth0
But IPv6 tells me:
# route -A inet6 -C -n
nd_print: no support for `ND Table' on this system.
System is Fedora Core 4 with:
kernel 2.6.16-1.2069_FC4
iproute-2.6.11-1
net-tools-1.60-52.fc4.2
Is there any tool available or support still missing?
Thank you for any hints.
Regards,
Peter
--
Dr. Peter Bieringer http://www.bieringer.de/pb/
GPG/PGP Key 0x958F422D mailto:[EMAIL PROTECTED]
Deep Space 6 Co-Founder and Core Member http://www.deepspace6.net/
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