iproute2 (ip) is a tool used to manipulate network configurations.
The ip command is meant to replace ifconfig/route commands on Linux. This command lets you perform advanced configurations that were not possible with ifconfig/route.
See:
Questions tagged [iproute2]
242 questions
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votes
2 answers
How do i modify route tables in EC2 instance to send traffic via eth1?
I have an ec2 AmazonLinux2 instance. It has a primary nic on eth0. I went ahead and attached another eni (with an associated public ip) eth1. I would like to make sure that I can send traffic via the eth1 as well but unable to.
curl --interface eth0…
Karthik Balasubramanian
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Clients couldn't query DNS server listening on router interface's secondary IP
I have a router where its interface has two IPs
$ ip addr
br-lan: mtu 1500 qdisc noqueue state UP qlen 1000
link/ether brd ff:ff:ff:ff:ff:ff
inet 192.168.3.1/24 brd 192.168.3.255 scope global br-lan
…
hgl
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1 answer
Auditing specific route table operations
Does Linux have a way to audit operations run against a specific route table?
I have the following config in my custom route table:
default dev tun0 scope link
192.168.100.0/28 dev eth0 scope link
for an unknown reason some processes remove the…
Mazzy
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1 answer
ipsec xfrm esp routing
i need a little help/explanation why the following netsetup is not working:
PC1 (192.168.66.1) <-- PLAIN --> (192.168.66.2)PC-GW(192.168.88.2) <-- ESP --> (192.168.88.1) PC2
I can send packets from PC1 192.168.66.1 to PC2 192.168.88.1 and the PC-GW…
kita
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- 1
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votes
1 answer
CentoOS and IP RULE
I don't understand my situation. I have a network lab like on a picture.
I can't ping 192.168.5.1 from 192.168.1.2 then the 192.168.5.1 has 192.168.4.2 like a default gateway.
Linux# ip route
default via 192.168.4.2 dev eth1 proto static src…
Paravozik
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1 answer
How to bridge an internal network interface to an OpenVPN tun/tap device
I'm using a two-VM setup wherein the first VM, machine A, has a closed, private LAN shared with the second VM, machine B, which has a second network interface that is configured to hit the internet.
Both adapters for the internal LAN are configured…
Qix - MONICA WAS MISTREATED
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1 answer
Linux internet default gateway + VPN default gateway
I'm currently using a barracuda vpn client to connect to a vpn, which sets a default gateway for the vpn, routing all traffic through it. I've read about iproute2 and secondary routing tables, but my question is: since I don't have access to the…
Thin_icE
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2 answers
Can't ping between interfaces on one device on the same network
There is a device, let's call it 1, on network A
Device 1 has two interfaces, eth5 and eth7
There is a device 2 on network A
Pinging from eth5 to device 2 works
Pinging from eth7 to device 2 works
Device 2 can ping eth5 and eth7
BUT, pinging from…
RAZ_Muh_Taz
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1 answer
Routing between two networks
Basically I would like to know what should I do to connect two PCs in different networks and make them to see each other.
The diagram is like the following
linux-pc-1-1 (192.168.0.2 eth0) <---> (192.168.0.1 eth0) linux-pc-1 (10.0.0.1 eth1) <--->…
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how to apply TC htb class to each of IPs in an IP range separately?
I use HTB for TC and mark packets with iptables. First I mark a range of IPs (like 192.168.1.0/24). Now I want to apply a htb class to each of these IPs separately. If I add a class and a filter for this mark, this filter applies to all IPs in this…
0
votes
1 answer
OpenVPN Server on a Multi-WAN Router
I have a OpenVPN Server on a MultiWAN Router (Ubuntu Based). The Problem is, that incoming packages not leaving the same WAN interface where they entered. I tested already with iptables MARK rules in combination with ip rules, but could not fix the…
Thomas
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1 answer
gretap tunnel return traffic not being handled
I'm using iproute2 to add a GRE layer 2 tunnel with a vlan tag as shown below.
ip link add name gre1 type gretap local 10.0.0.2 remote 8.8.8.8
ip link add name gre1.100 link gre1 type vlan proto 802.1q id 100
ip link set gre1 up
ip link set gre1.100…
Preston
- 191
- 10
-1
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1 answer
How to understand this output of ip route list table 255
broadcast 100.125.71.152 dev rmnet_data1 proto kernel scope link src 100.125.71.153
local 100.125.71.153 dev rmnet_data1 proto kernel scope host src 100.125.71.153
broadcast 100.125.71.155 dev rmnet_data1 proto kernel scope link src…
iseki
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-1
votes
1 answer
Linux route policy based on tos returning wrong gateway
I have a simulated ad-hoc network running on Docker, using Ubuntu 16.04 as a base.
I have a number of routing tables. The table in question, table 102, appears as:
root@b22e0eafe06d:~# ip route show table 102
172.17.0.3 via 172.17.0.3 dev eth0 …
Dave Isaacs
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-1
votes
2 answers
Debian - Dual WAN - Static Route on a DHCP Interface
I've got two WAN interfaces coming into a Debian 8 VM.
WAN 1 - All Internet and local traffic. (0.0.0.0/0) Has a a static IP, thus IP, netmask and gateway are fixed values.
WAN 2 - Specific private subnet traffic only (10.100.0.0/16). IP obtained…
Indecided
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