Networks running a slow unreliable protocol (sort of RIP),Ĭonf/all/rp_filter must also be set to TRUE to do source validationĭefault value is 0. Could cause troubles for complicated (not loop free) Recommended option for single homed hosts and stub network You may need to make this change as well: echo 0 > /proc/sys/net/ipv4/conf/all/rp_filterġ - do source validation by reversed path, as specified in RFC1812 I suggest first trying this: echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter The documentation for each of them is included below. When you say you get an ARP response for the wrong interface, are you actually dumping traffic or just looking at the resulting ARP table? It's possible you're getting ARP replies for both interfaces.Īnyway, I believe the answer to your problem lies in properly manipulating rp_filter and arp_filter. I've tried fiddling with _filter, _ignore, and _announce, as mentioned here, but to no avail.ĮDIT: setting a gateway (on either interface) makes no difference (as it shouldn't).ĮDIT: this worked fine on a previous version of the OS (based on openembedded).
#DOES THE ARP TABLE SHOW MAC ADDRESS MAC#
The source MAC of the ARP reply packet is also 24:3C:20:06:3E:6D. It's a very cutdown linux, so I don't have tools like artptables, iptables, sysctl, brctl, etc.ĮDIT: I am dumping traffic and looking at the ARP table. RX packets:0 errors:59 dropped:0 overruns:0 frame:0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 Relevant ifconfig output: eth0 Link encap:Ethernet HWaddr 00:01:C0:04:BD:F7 I do an ARP request from a computer (tried with different computers) on the same IP subnet. Why is the robot replying over the wireless interface to IP requests on the wired?ĮDIT: both the wired and wireless adapters on the same IP subnet.
When the wire is disconnected, the wired IP replies to ping. ? There's no bridge running on the robot, so why don't I get the wired MAC? However, when I do an ARP request of the wired IP, the ARP reply contains the wireless MAC. As in, ifconfig shows a proper IP and route shows proper routes. When I assign an IP to the wired (either statically or with DHCP), it looks like it works. When I boot up, it connects to the wireless fine. MAC address of the system that you just pinged.I've got a robot running linux with wired and wireless adapters. Operation is complete, type Arp -a, and you’ll see the MAC addresses by first pinging the remote system. You can even populate the ARP cache with remote To use it, enter the following at the command Stores the IP addresses and MAC addresses of the computers that When used with the -a parameter, it displays the ARP cache, which
You with remote MAC addresses is Address Resolution Protocol (ARP).
Knowing the MAC addressĬomes in handy for a number of troubleshooting operations.Īnother XP command-line tool that can provide
Tool, which you can use to quickly ascertain the physical or mediaĪccess control (MAC) address assigned to a network interfaceĪdapter in a local or remote computer.
#DOES THE ARP TABLE SHOW MAC ADDRESS WINDOWS#
Windows XP comes with the Getmac command-line Another XP command-line tool that can provide. Knowing the MAC address comes in handy for a number of troubleshooting operations. Windows XP comes with the Getmac command-line tool, which you can use to quickly ascertain the physical or media access control (MAC) address assigned to a network interface adapter in a local or remote computer. Tech Tip: Use ARP to track remote MAC addresses
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