Strange Route Table Entry
Running a brand new install of v9.2 (very impressed BTW) with a Win2000 box and this Linux box running peer to peer through a Linksys adsl router. I have a strange (to me) entry in my Route Table that has me perplexed. Here is the result of 'route -n' and 'ifconfig': route -n: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.100.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 ifconfig: eth0 Link encap:Ethernet HWaddr 00:10:B5:11:F9:42 inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::210:b5ff:fe11:f942/64 Scope:Link UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 RX packets:203009 errors:0 dropped:0 overruns:0 frame:0 TX packets:134429 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:226896248 (216.3 Mb) TX bytes:14366030 (13.7 Mb) Interrupt:11 Base address:0xa000 eth1 Link encap:Ethernet HWaddr 00:50:BF:79:E4:F1 inet addr:192.168.100.1 Bcast:192.168.100.255 Mask:255.255.255.0 inet6 addr: fe80::250:bfff:fe79:e4f1/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:756 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:176788 (172.6 Kb) Interrupt:5 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:113990 errors:0 dropped:0 overruns:0 frame:0 TX packets:113990 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:18730435 (17.8 Mb) TX bytes:18730435 (17.8 Mb) What I have no clue about is the entry in the route table of 169.254.0.0? I have no idea how it got there, whether it should be there, whether it suggests a breakin??? I've never had an 'external' address like that turn up in here in prior installs. I have very limited knowledge when it comes to networking and was hoping someone could advise me on how to remove the entry, if in fact it should be removed, as well as how it might have got in there in the first place - certainly it was no concious effort on my part? Regards, Paul.
On Tue, 2004-11-02 at 08:47 +1100, Paul Trevethan wrote:
Running a brand new install of v9.2 (very impressed BTW) with a Win2000 box and this Linux box running peer to peer through a Linksys adsl router. I have a strange (to me) entry in my Route Table that has me perplexed. Here is the result of 'route -n' and 'ifconfig':
route -n:
Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.100.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
snip
What I have no clue about is the entry in the route table of 169.254.0.0? I have no idea how it got there, whether it should be there, whether it suggests a breakin??? I've never had an 'external' address like that turn up in here in prior installs.
I have the same entry - similar setup, thru a D-Link wireless ADSL router. Output of whois: OrgName: Internet Assigned Numbers Authority OrgID: IANA Address: 4676 Admiralty Way, Suite 330 City: Marina del Rey StateProv: CA PostalCode: 90292-6695 Country: US NetRange: 169.254.0.0 - 169.254.255.255 CIDR: 169.254.0.0/16 NetName: LINKLOCAL NetHandle: NET-169-254-0-0-1 Parent: NET-169-0-0-0-0 NetType: IANA Special Use NameServer: BLACKHOLE-1.IANA.ORG NameServer: BLACKHOLE-2.IANA.ORG Comment: Please see RFC 3330 for additional information. RegDate: 1998-01-27 Updated: 2002-10-14 OrgAbuseHandle: IANA-IP-ARIN OrgAbuseName: Internet Corporation for Assigned Names and Number OrgAbusePhone: +1-310-301-5820 OrgAbuseEmail: abuse@iana.org OrgTechHandle: IANA-IP-ARIN OrgTechName: Internet Corporation for Assigned Names and Number OrgTechPhone: +1-310-301-5820 OrgTechEmail: abuse@iana.org # ARIN WHOIS database, last updated 2004-11-01 19:10 # Enter ? for additional hints on searching ARIN's WHOIS database. I have no idea about this either, but it looks inocuous (and official) to me! David -- Registered Linux User No 207521 The Linux Counter: http://counter.li.org/ "The above is my personal opinion and does not necessarily reflect that of the little voices in my head."
On Tuesday 02 November 2004 6:57 am, David Robertson wrote:
On Tue, 2004-11-02 at 08:47 +1100, Paul Trevethan wrote:
Running a brand new install of v9.2 (very impressed BTW) with a Win2000 box and this Linux box running peer to peer through a Linksys adsl router. I have a strange (to me) entry in my Route Table that has me perplexed. Here is the result of 'route -n' and 'ifconfig':
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 I posted this in August where we had quite a discussion. This is an excerpt that I posted.
BTW: here is the IANA writeup on 169.254:
169.254.0.0/16 - This is the "link local" block. It is allocated for
communication between hosts on a single link. Hosts obtain these
addresses by auto-configuration, such as when a DHCP server may not
be found.
---------------------------------------------
The URL is: http://lists.suse.com/archive/suse-linux-e/2004-Aug/2588.html
And follow the thread.
--
Jerry Feldman
On Tue, 2004-11-02 at 08:47 +1100, Paul Trevethan wrote:
Running a brand new install of v9.2 (very impressed BTW) with a Win2000 box and this Linux box running peer to peer through a Linksys adsl router. I have a strange (to me) entry in my Route Table that has me perplexed. Here is the result of 'route -n' and 'ifconfig':
Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.100.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
The 169.154.0.0 is a "link-local" route to make Linux friendly to a network with WinXP machines (and does not have a properly configured and running DHCP server). If you don't need that route, you can edit your /etc/sysconfig/network/config file and set the LINKLOCAL_INTERFACES= parameter to an empty string. -Ti -- Ti Kan http://www.amb.org/ti Vorsprung durch Technik
participants (4)
-
David Robertson
-
Jerry Feldman
-
Paul Trevethan
-
ti@amb.org