LPI
117-202 · Question #248
On a Linux router, packet forwarding for IPv4 has been enabled. After a reboot, the machine no longer forwards IP packets from other hosts. The commanD. echo 1 > /proc/sys/net/ipv4/ip_forward…
The correct answer is C. In /etc/sysctl.conf change net.ipv4.ip_forward to 1. See the full explanation below for the reasoning.
Question
On a Linux router, packet forwarding for IPv4 has been enabled. After a reboot, the machine no longer forwards IP packets from other hosts. The commanD. echo 1 > /proc/sys/net/ipv4/ip_forward temporarily resolves this issue. Which one of the following options is the best way to ensure this setting is saved across system restarts?
Options
- AAdd echo 1 > /proc/sys/net/ipv4/ip_forward to the root user login script.
- BAdd echo 1 > /proc/sys/net/ipv4/ip_forward to any user login script.
- CIn /etc/sysctl.conf change net.ipv4.ip_forward to 1.
- DIn /etc/rc.local add net.ipv4.ip_forward = 1.
- EIn /etc/sysconfig/iptables-config add ipv4.ip_foward = 1.
How the community answered
(24 responses)- A8% (2)
- C83% (20)
- D4% (1)
- E4% (1)
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