Tell me more ×
Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems.. It's 100% free, no registration required.
up vote 2 down vote favorite

I am working on an Arch Linux machine with an ethernet interface eth1. I have created the interface eth1:0 using ifconfig and given it a dummy hardware address (00:01:02:03:04:05). When I send a UDP packet to a server application running on a remote server machine, I get back the right response. But then I see an ICMP Destination Unreachable going out from the eth1:0 interface ip address. How can I mute this ICMP message? I have tried different mac addresses and set up an arp cache on both client and server machines without success.

Appreciate any help and thanks in advance.

share|improve this question
how do you send the UDP packet ? could you please dump here the output from the ` ip route list` command ? – Hanan N. Dec 20 '11 at 10:08
Here's the output of ip route list - default via 192.168.100.1 dev eth1 192.168.100.0/24 dev eth1 proto kernel scope link src 192.168.100.144 – John Qualis Dec 20 '11 at 10:40
add more details about your ip address (as i am understand from your question both interfaces have diefferrent ip address). – Hanan N. Dec 20 '11 at 17:01
eth1 is 92.168.100.144, eth1:0 is 192.168.100.81 – John Qualis Dec 21 '11 at 4:45
Is there a reason to use another interface with another MAC address for IP address in one subnet? Why you don't use the second IP address as a secondary IP address on the eth1 interface? – Jan Marek Jan 27 '12 at 12:14

1 Answer

up vote -2 down vote

Sound like you have a netmask mismatch on your sibinterface. Double check the netmask of your application server then ensure the same netmask is being used on the sub-interface of your Linux server.

share|improve this answer
1  
They issue would not be ICMP specific. – Karlson Nov 30 '12 at 16:04

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.