How do I change the MTU for only localhost connections on a Red Hat box?

Question

I want to change the MTU value for only the connections that are going between localhost / 127.0.0.1 on a Red Hat box. How do I do that?

Answer 1

Use ifconfig

# ifconfig lo mtu 16436

You can make the change more permanent by adding to /etc/sysconfig/network-scripts/ifcfg-lo:

MTU=16436